LTX2 Ultimate Tutorial published that covers ComfyUI fully + SwarmUI fully both on Windows and Cloud services + Z-Image Base - All literally 1-click to setup and download with 100% best quality ready to use presets and workflows - as low as 6 GB GPUs
Full tutorial link > https://www.youtube.com/watch?v=SkXrYezeEDc
Info
LTX 2 is the newest state of the art (SOTA) Open Source video generation model and tutorial will show you how to use it with very best and most performant way in ComfyUI and also in SwarmUI. Moreover, Z Image Base model published and I will show how to use Z Image Base with most amazing preset and workflow as well. Furthermore, this tutorial will show you how to install, update, setup, download ComfyUI and SwarmUI and models and presets and workflows both on Windows and on RunPod, Massed Compute and SimplePod. Linux users can use Massed Compute scripts and installers directly. This is a masterpiece entire lecture level complete tutorial. This video will kickstart your AI journey 100x. Both local Windows and Cloud.
📂 Resources & Links:
🤖 ComfyUI Installer and Presets Zip File With CUDA 13: [ https://www.patreon.com/posts/ComfyUI-Installers-105023709 ]
💻 SwarmUI Installer and Presets Zip File: [ https://www.patreon.com/posts/SwarmUI-Install-Presets-114517862 ]
🚀 Model Downloader Zip File: [ https://www.patreon.com/posts/Model-Downloader-114517862 ]
🚆 SECourses Musubi Trainer (Model Quantize and Train App): [ https://www.patreon.com/posts/SECourses-Musubi-Trainer-137551634 ]
🛠️ Image Comparison Slider Tool: [ https://www.patreon.com/posts/image-video-comparison-slider-app-133935178 ]
👋 SECourses Discord Channel for 7/24 Support: [ https://bit.ly/SECoursesDiscord ]
ℹ️ SimplePod Register : https://simplepod.ai/ref?user=secourses
ℹ️ SimplePod Template : https://dash.simplepod.ai/account/explore/100/ref-secourses/
ℹ️ RunPod Register : https://get.runpod.io/955rkuppqv4h
ℹ️ RunPod Template : https://get.runpod.io/SECourses_CU13
ℹ️ Massed Compute Register : https://bit.ly/SECoursesMassedCompute
⏱️ TIMESTAMPS
00:00:00 Intro: ComfyUI + SwarmUI presets, Z-Image, model downloader, cloud installs
00:00:28 Free prompt enhancement with Google AI Studio (prepared prompt file)
00:01:26 Demo: 45s audio-driven lip-sync image→video (LTX 2)
00:02:25 Quick demos: ComfyUI image→video, text→video, Z-Image base
00:03:43 Quick demos: SwarmUI LTX 2 image→video + Z-Image base
00:04:46 Install/update presets zip (v78+): extract & overwrite everything
00:05:11 Upgrade to CUDA 13 safely: delete venv then run ComfyUI update/install
00:06:00 Windows prereqs + the always-updated setup guide referenced in description
00:06:42 Install required node bundles: (1) SwarmUI extra nodes + (100) LTX audio
00:07:29 VRAM-optimized launcher: no-VRAM / cache / smart-memory / precision choices
00:09:36 Share one model library: configure extra_model_paths.yaml (no duplicates)
00:10:25 Model Downloader overview: set base path + one-click bundles for SwarmUI/ComfyUI
00:11:43 Download LTX 2 core bundle: multi-connection download + merge + hash verify
00:12:12 Low-VRAM path: GGUF distilled models vs recommended FP8-scaled defaults
00:14:16 URL Downloader: Civitai/HF links, folder targeting, and optional API keys
00:14:54 ComfyUI preset pack tour: LTX2 (I2V/T2V/audio) + Z-Image (base/2× upscale)
00:15:16 ComfyUI audio lip-sync preset: image + resolution + audio setup
00:16:58 Frames & prompting: 24fps math, run/stop frame count, lyrics/subtitles prompts
00:17:59 Quality/perf knobs: CRF, VRAM monitoring, and low-VRAM args recap
00:20:22 Review result + move to LTX 2 image→video preset workflow
00:21:50 Prompt enhancer workflow: drag prompt file into AI Studio (optionally add image)
00:24:11 Z-Image troubleshooting: disable Sage Attention and restart
00:24:32 Z-Image base + 2× upscale preset: when to use it and what to expect
00:26:47 Outputs & reproducibility: where renders save + drag PNG to reload metadata
00:27:57 Update SwarmUI via zip: get latest presets + utilities
00:28:27 SwarmUI setup: ComfyUI backend, passing args, and pointing to model folders
00:30:21 SwarmUI image→video: direct apply + init image workflow
00:31:17 Fix model load/caching issues: add --use-cache-none when needed
00:32:51 SwarmUI text→video + upscale: duration/frames, half-res then upscale rules
00:33:52 SwarmUI outputs: output_local/raw + metadata saved with generations
00:35:05 SwarmUI Z-Image: base vs 2× upscale comparison + speed notes
00:36:58 Image comparison slider tool: quick before/after inspection
00:37:51 RunPod start: template choice, CUDA/driver constraints, optional storage volume
00:43:30 RunPod Jupyter: upload ComfyUI zip, extract, install bundles (1+100)
00:46:28 RunPod: run Model Downloader, start ComfyUI, connect via exposed port
00:52:05 RunPod: switch to SwarmUI, map folders (case-sensitive), import presets
00:55:43 RunPod: download outputs as archive + stop vs terminate cost control
00:57:55 SimplePod: cheaper/faster alternative + persistent volume setup highlights
01:03:52 Massed Compute: deploy with coupon + connect via ThinLinc (shared folder setup)
01:08:17 Massed Compute: install bundles + download models (disk speed advantage)
01:10:48 Massed Compute: start ComfyUI, connect from PC, run lip-sync preset
01:14:26 Massed Compute: hook SwarmUI to ComfyUI backend + text→video demo
01:17:02 Wrap-up: recap providers + next steps
45 Second Raw Demo Video
This video made with text + image + audio = lip synched and animated video at once
Comments (16)
Hi, will this workflow be updated for ltx 2.3? LTX2 Audio Lip Synch Image To Video. Or is it possible to use ltx 2.3 with it? Thank you.
hi i have updated LTX 2.3 workflows with latest ComfyUI file. sorry for late reply. I am even adding video expand workflow soon hopefully. read latest changelogs of ComfyUI installer page
SwarmUI ExtraNodes installed successfully The system cannot find the batch label specified - install_kjnodes ======================================== Installing ComfyUI-LTXVideo... ======================================== No local changes to save HEAD is now at 82bd963 Merge pull request #411 from Lightricks/pr-2026-02-11 Already up to date. Using Python 3.10.11 environment at: C:\Users\ekara\Downloads\ComfyUI_V81\ComfyUI\venv Audited 5 packages in 14ms ComfyUI-LTXVideo installed successfully The system cannot find the batch label specified - install_customscripts These node did not installed with installer, I cant open ltx2 preset in comfy ui. Thank you.
hi did you follow tutorial and used Windows_Custom_Nodes_Bundles_Installer.bat?
ComfyUI execution error: No operator found for `memory_efficient_attention_forward` with inputs: query : shape=(1, 1024, 30, 128) (torch.float32) key : shape=(1, 1024, 30, 128) (torch.float32) value : shape=(1, 1024, 30, 128) (torch.float32) attn_bias : p : 0.0 `fa3F@0.0.0` is not supported because: requires device with capability <= (9, 0) but your GPU has capability (12, 0) (too new) dtype=torch.float32 (supported: {torch.float16, torch.bfloat16}) operator wasn't built - see `python -m xformers.info` for more info requires device with capability == (8, 0) but your GPU has capability (12, 0) (too new) `fa2F@2.8.3` is not supported because: dtype=torch.float32 (supported: {torch.float16, torch.bfloat16}) `cutlassF-pt` is not supported because: requires device with capability <= (9, 0) but your GPU has capability (12, 0) (too new) I am getting this error when trying to generate with ltx 2 model. Thank you for your help.
yes please use --use-pytorch-cross-attention
When I try the preset for LTX2 I2V, the audio sounds fuzzy and very poor quality. Are there settings that I should be changing to get clean audio?
sadly no sound settings. you need to try different prompts
Firstly thank you for all the scripts and apps they are super helpful! but and I'm sorry if this already exists and I'm too dumb to find it but is it possible to have a centralised list/links of all scripts and apps, so they are easier to find when you need them? I just spend over an hour searching patreon for this app using every possible combination of keywords i could think of (it's not you, it's patreons search function that is garbage). I often need to delete apps i don't use so often to save space and then need to redownload again later.
Yes we have it : https://github.com/FurkanGozukara/Stable-Diffusion/blob/main/Patreon-Posts-Index.md
Yesterday I recorded several videos with LTX2 i2v without any problems. Today, for reasons I don't understand, LTX2 switched from i2v to t2v. How is this possible? I haven't added any LoRa. Just the two from the preset. I haven't changed anything in the SwarmUI ComfyUI installation.
After testing with another image, everything works normally; it seems that the first image was the problem... strange...
Hi, I have no problem with LTX2, have you tried to reinstall ComfyUI et SwamUI?
Have you downloaded all LTX2 model with the "windows_start_Download_Models_app?
Hi, thanks for the article. I'm facing an issue when trying to use the LTX2 Image to Video preset, I click generate and nothing happens. Looks in the logs like ComfyUI is crashing/restarting when trying to load the model (fp8 with vae) Can you help me? Thanks! 18:12:37.339 [Info] Self-Start ComfyUI-0 had errors before shutdown: [ComfyUI-0/STDERR] Adding extra search path checkpoints C:\Users\halco\Desktop\swarm\SwarmUI\Models\Stable-Diffusion [ComfyUI-0/STDERR] Adding extra search path vae C:\Users\halco\Desktop\swarm\SwarmUI\Models\VAE [ComfyUI-0/STDERR] Adding extra search path loras C:\Users\halco\Desktop\swarm\SwarmUI\Models\Lora [ComfyUI-0/STDERR] Adding extra search path loras C:\Users\halco\Desktop\swarm\SwarmUI\Models\LyCORIS [ComfyUI-0/STDERR] Adding extra search path upscale_models C:\Users\halco\Desktop\swarm\SwarmUI\Models\ESRGAN [ComfyUI-0/STDERR] Adding extra search path upscale_models C:\Users\halco\Desktop\swarm\SwarmUI\Models\RealESRGAN [ComfyUI-0/STDERR] Adding extra search path upscale_models C:\Users\halco\Desktop\swarm\SwarmUI\Models\SwinIR [ComfyUI-0/STDERR] Adding extra search path upscale_models C:\Users\halco\Desktop\swarm\SwarmUI\Models\upscale-models [ComfyUI-0/STDERR] Adding extra search path upscale_models C:\Users\halco\Desktop\swarm\SwarmUI\Models\upscale_models [ComfyUI-0/STDERR] Adding extra search path embeddings C:\Users\halco\Desktop\swarm\SwarmUI\Models\Embeddings [ComfyUI-0/STDERR] Adding extra search path hypernetworks C:\Users\halco\Desktop\swarm\SwarmUI\Models\hypernetworks [ComfyUI-0/STDERR] Adding extra search path controlnet C:\Users\halco\Desktop\swarm\SwarmUI\Models\controlnet [ComfyUI-0/STDERR] Adding extra search path controlnet C:\Users\halco\Desktop\swarm\SwarmUI\Models\model_patches [ComfyUI-0/STDERR] Adding extra search path model_patches C:\Users\halco\Desktop\swarm\SwarmUI\Models\controlnet [ComfyUI-0/STDERR] Adding extra search path model_patches C:\Users\halco\Desktop\swarm\SwarmUI\Models\model_patches [ComfyUI-0/STDERR] Adding extra search path clip C:\Users\halco\Desktop\swarm\SwarmUI\Models\text_encoders [ComfyUI-0/STDERR] Adding extra search path clip C:\Users\halco\Desktop\swarm\SwarmUI\Models\clip [ComfyUI-0/STDERR] Adding extra search path clip_vision C:\Users\halco\Desktop\swarm\SwarmUI\Models\clip_vision [ComfyUI-0/STDERR] Adding extra search path unet C:\Users\halco\Desktop\swarm\SwarmUI\Models\unet [ComfyUI-0/STDERR] Adding extra search path diffusion_models C:\Users\halco\Desktop\swarm\SwarmUI\Models\diffusion_models [ComfyUI-0/STDERR] Adding extra search path gligen C:\Users\halco\Desktop\swarm\SwarmUI\Models\gligen [ComfyUI-0/STDERR] Adding extra search path ipadapter C:\Users\halco\Desktop\swarm\SwarmUI\Models\ipadapter [ComfyUI-0/STDERR] Adding extra search path yolov8 C:\Users\halco\Desktop\swarm\SwarmUI\Models\yolov8 [ComfyUI-0/STDERR] Adding extra search path tensorrt C:\Users\halco\Desktop\swarm\SwarmUI\Models\tensorrt [ComfyUI-0/STDERR] Adding extra search path clipseg C:\Users\halco\Desktop\swarm\SwarmUI\Models\clipseg [ComfyUI-0/STDERR] Adding extra search path style_models C:\Users\halco\Desktop\swarm\SwarmUI\Models\style_models [ComfyUI-0/STDERR] Adding extra search path latent_upscale_models C:\Users\halco\Desktop\swarm\SwarmUI\Models\latent_upscale_models [ComfyUI-0/STDERR] Adding extra search path checkpoints C:\Users\halco\Desktop\swarm\SwarmUI\Models\Stable-Diffusion [ComfyUI-0/STDERR] Adding extra search path vae C:\Users\halco\Desktop\swarm\SwarmUI\Models\VAE [ComfyUI-0/STDERR] Adding extra search path loras C:\Users\halco\Desktop\swarm\SwarmUI\Models\Lora [ComfyUI-0/STDERR] Adding extra search path loras C:\Users\halco\Desktop\swarm\SwarmUI\Models\LyCORIS [ComfyUI-0/STDERR] Adding extra search path upscale_models C:\Users\halco\Desktop\swarm\SwarmUI\Models\ESRGAN [ComfyUI-0/STDERR] Adding extra search path upscale_models C:\Users\halco\Desktop\swarm\SwarmUI\Models\RealESRGAN [ComfyUI-0/STDERR] Adding extra search path upscale_models C:\Users\halco\Desktop\swarm\SwarmUI\Models\SwinIR [ComfyUI-0/STDERR] Adding extra search path upscale_models C:\Users\halco\Desktop\swarm\SwarmUI\Models\upscale-models [ComfyUI-0/STDERR] Adding extra search path upscale_models C:\Users\halco\Desktop\swarm\SwarmUI\Models\upscale_models [ComfyUI-0/STDERR] Adding extra search path embeddings C:\Users\halco\Desktop\swarm\SwarmUI\Models\Embeddings [ComfyUI-0/STDERR] Adding extra search path hypernetworks C:\Users\halco\Desktop\swarm\SwarmUI\Models\hypernetworks [ComfyUI-0/STDERR] Adding extra search path controlnet C:\Users\halco\Desktop\swarm\SwarmUI\Models\controlnet [ComfyUI-0/STDERR] Adding extra search path controlnet C:\Users\halco\Desktop\swarm\SwarmUI\Models\model_patches [ComfyUI-0/STDERR] Adding extra search path model_patches C:\Users\halco\Desktop\swarm\SwarmUI\Models\controlnet [ComfyUI-0/STDERR] Adding extra search path model_patches C:\Users\halco\Desktop\swarm\SwarmUI\Models\model_patches [ComfyUI-0/STDERR] Adding extra search path clip C:\Users\halco\Desktop\swarm\SwarmUI\Models\text_encoders [ComfyUI-0/STDERR] Adding extra search path clip C:\Users\halco\Desktop\swarm\SwarmUI\Models\clip [ComfyUI-0/STDERR] Adding extra search path clip_vision C:\Users\halco\Desktop\swarm\SwarmUI\Models\clip_vision [ComfyUI-0/STDERR] Adding extra search path unet C:\Users\halco\Desktop\swarm\SwarmUI\Models\unet [ComfyUI-0/STDERR] Adding extra search path diffusion_models C:\Users\halco\Desktop\swarm\SwarmUI\Models\diffusion_models [ComfyUI-0/STDERR] Adding extra search path gligen C:\Users\halco\Desktop\swarm\SwarmUI\Models\gligen [ComfyUI-0/STDERR] Adding extra search path ipadapter C:\Users\halco\Desktop\swarm\SwarmUI\Models\ipadapter [ComfyUI-0/STDERR] Adding extra search path yolov8 C:\Users\halco\Desktop\swarm\SwarmUI\Models\yolov8 [ComfyUI-0/STDERR] Adding extra search path tensorrt C:\Users\halco\Desktop\swarm\SwarmUI\Models\tensorrt [ComfyUI-0/STDERR] Adding extra search path clipseg C:\Users\halco\Desktop\swarm\SwarmUI\Models\clipseg [ComfyUI-0/STDERR] Adding extra search path style_models C:\Users\halco\Desktop\swarm\SwarmUI\Models\style_models [ComfyUI-0/STDERR] Adding extra search path latent_upscale_models C:\Users\halco\Desktop\swarm\SwarmUI\Models\latent_upscale_models [ComfyUI-0/STDERR] Adding extra search path custom_nodes C:\Users\halco\Desktop\swarm\SwarmUI\src\BuiltinExtensions\ComfyUIBackend\DLNodes [ComfyUI-0/STDERR] Adding extra search path custom_nodes C:\Users\halco\Desktop\swarm\SwarmUI\src\BuiltinExtensions\ComfyUIBackend\ExtraNodes [ComfyUI-0/STDERR] Checkpoint files will always be loaded safely. [ComfyUI-0/STDERR] WARNING: You need pytorch with cu130 or higher to use optimized CUDA operations. [ComfyUI-0/STDERR] Found comfy_kitchen backend eager: {'available': True, 'disabled': False, 'unavailable_reason': None, 'capabilities': ['apply_rope', 'apply_rope1', 'dequantize_nvfp4', 'dequantize_per_tensor_fp8', 'quantize_nvfp4', 'quantize_per_tensor_fp8', 'scaled_mm_nvfp4']} [ComfyUI-0/STDERR] Found comfy_kitchen backend triton: {'available': False, 'disabled': True, 'unavailable_reason': "ImportError: No module named 'triton'", 'capabilities': []} [ComfyUI-0/STDERR] Found comfy_kitchen backend cuda: {'available': True, 'disabled': True, 'unavailable_reason': None, 'capabilities': ['apply_rope', 'apply_rope1', 'dequantize_nvfp4', 'dequantize_per_tensor_fp8', 'quantize_nvfp4', 'quantize_per_tensor_fp8']} [ComfyUI-0/STDERR] Total VRAM 11264 MB, total RAM 16292 MB [ComfyUI-0/STDERR] pytorch version: 2.7.1+cu128 [ComfyUI-0/STDERR] Set vram state to: NORMAL_VRAM [ComfyUI-0/STDERR] Device: cuda:0 NVIDIA GeForce RTX 2080 Ti : cudaMallocAsync [ComfyUI-0/STDERR] Using async weight offloading with 2 streams [ComfyUI-0/STDERR] Enabled pinned memory 7331.0 [ComfyUI-0/STDERR] Using pytorch attention [ComfyUI-0/STDERR] Python version: 3.12.10 (tags/v3.12.10:0cc8128, Apr 8 2025, 12:21:36) [MSC v.1943 64 bit (AMD64)] [ComfyUI-0/STDERR] ComfyUI version: 0.11.1 [ComfyUI-0/STDERR] Using existing copy of specific frontend version tag: Comfy-Org/ComfyUI_frontend@v1.35.9 [ComfyUI-0/STDERR] [Prompt Server] web root: C:\Users\halco\Desktop\swarm\SwarmUI\dlbackend\comfy\ComfyUI\web_custom_versions\Comfy-Org_ComfyUI_frontend\1.35.9 [ComfyUI-0/STDERR] [C:\Users\halco\Desktop\swarm\SwarmUI\src\BuiltinExtensions\ComfyUIBackend\DLNodes\comfyui_controlnet_aux] | INFO -> Using ckpts path: C:\Users\halco\Desktop\swarm\SwarmUI\src\BuiltinExtensions\ComfyUIBackend\DLNodes\comfyui_controlnet_aux\ckpts [ComfyUI-0/STDERR] [C:\Users\halco\Desktop\swarm\SwarmUI\src\BuiltinExtensions\ComfyUIBackend\DLNodes\comfyui_controlnet_aux] | INFO -> Using symlinks: False [ComfyUI-0/STDERR] [C:\Users\halco\Desktop\swarm\SwarmUI\src\BuiltinExtensions\ComfyUIBackend\DLNodes\comfyui_controlnet_aux] | INFO -> Using ort providers: ['CUDAExecutionProvider', 'DirectMLExecutionProvider', 'OpenVINOExecutionProvider', 'ROCMExecutionProvider', 'MIGraphXExecutionProvider', 'CPUExecutionProvider', 'CoreMLExecutionProvider'] [ComfyUI-0/STDERR] C:\Users\halco\Desktop\swarm\SwarmUI\src\BuiltinExtensions\ComfyUIBackend\DLNodes\comfyui_controlnet_aux\node_wrappers\dwpose.py:26: UserWarning: DWPose: Onnxruntime not found or doesn't come with acceleration providers, switch to OpenCV with CPU device. DWPose might run very slowly [ComfyUI-0/STDERR] warnings.warn("DWPose: Onnxruntime not found or doesn't come with acceleration providers, switch to OpenCV with CPU device. DWPose might run very slowly") [ComfyUI-0/STDERR] [ComfyUI-0/STDERR] Import times for custom nodes: [ComfyUI-0/STDERR] 0.0 seconds: C:\Users\halco\Desktop\swarm\SwarmUI\dlbackend\comfy\ComfyUI\custom_nodes\websocket_image_save.py [ComfyUI-0/STDERR] 0.0 seconds: C:\Users\halco\Desktop\swarm\SwarmUI\src\BuiltinExtensions\ComfyUIBackend\DLNodes\ComfyUI-Frame-Interpolation [ComfyUI-0/STDERR] 0.1 seconds: C:\Users\halco\Desktop\swarm\SwarmUI\src\BuiltinExtensions\ComfyUIBackend\ExtraNodes\SwarmComfyCommon [ComfyUI-0/STDERR] 0.5 seconds: C:\Users\halco\Desktop\swarm\SwarmUI\src\BuiltinExtensions\ComfyUIBackend\ExtraNodes\SwarmComfyExtra [ComfyUI-0/STDERR] 0.6 seconds: C:\Users\halco\Desktop\swarm\SwarmUI\src\BuiltinExtensions\ComfyUIBackend\DLNodes\comfyui_controlnet_aux [ComfyUI-0/STDERR] 0.8 seconds: C:\Users\halco\Desktop\swarm\SwarmUI\src\BuiltinExtensions\ComfyUIBackend\DLNodes\ComfyUI-TeaCache [ComfyUI-0/STDERR] [ComfyUI-0/STDERR] Context impl SQLiteImpl. [ComfyUI-0/STDERR] Will assume non-transactional DDL. [ComfyUI-0/STDERR] Assets scan(roots=['models']) completed in 0.042s (created=1, skipped_existing=22, orphans_pruned=0, total_seen=23) [ComfyUI-0/STDERR] Starting server [ComfyUI-0/STDERR] [ComfyUI-0/STDERR] To see the GUI go to: http://127.0.0.1:7824 [ComfyUI-0/STDERR] got prompt 18:12:37.340 [Error] Self-Start ComfyUI-0 on port 7824 failed. Restarting per configuration AutoRestart=true... 18:12:37.341 [Error] [BackendHandler] backend #0 failed to load model with error: System.Net.WebSockets.WebSocketException (0x80004005): The remote party closed the WebSocket connection without completing the close handshake. ---> System.IO.IOException: Unable to read data from the transport connection: Se ha forzado la interrupción de una conexión existente por el host remoto.. ---> System.Net.Sockets.SocketException (10054): Se ha forzado la interrupción de una conexión existente por el host remoto. --- End of inner exception stack trace --- at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken) at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token) at System.Net.Http.HttpConnection.ReadBufferedAsyncCore(Memory`1 destination) at System.Runtime.CompilerServices.PoolingAsyncValueTaskMethodBuilder`1.StateMachineBox`1.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token) at System.Net.Http.HttpConnection.RawConnectionStream.ReadAsync(Memory`1 buffer, CancellationToken cancellationToken) at System.Runtime.CompilerServices.PoolingAsyncValueTaskMethodBuilder`1.StateMachineBox`1.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token) at System.IO.Stream.ReadAtLeastAsyncCore(Memory`1 buffer, Int32 minimumBytes, Boolean throwOnEndOfStream, CancellationToken cancellationToken) at System.Runtime.CompilerServices.PoolingAsyncValueTaskMethodBuilder`1.StateMachineBox`1.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token) at System.Net.WebSockets.ManagedWebSocket.EnsureBufferContainsAsync(Int32 minimumRequiredBytes, CancellationToken cancellationToken) at System.Runtime.CompilerServices.PoolingAsyncValueTaskMethodBuilder`1.StateMachineBox`1.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token) at System.Net.WebSockets.ManagedWebSocket.ReceiveAsyncPrivate[TResult](Memory`1 payloadBuffer, CancellationToken cancellationToken) at System.Net.WebSockets.ManagedWebSocket.ReceiveAsyncPrivate[TResult](Memory`1 payloadBuffer, CancellationToken cancellationToken) at System.Runtime.CompilerServices.PoolingAsyncValueTaskMethodBuilder`1.StateMachineBox`1.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token) at System.Threading.Tasks.ValueTask`1.ValueTaskSourceAsTask.<>c.<.cctor>b__4_0(Object state) --- End of stack trace from previous location --- at SwarmUI.Utils.Utilities.ReceiveData(WebSocket socket, Int64 maxBytes, CancellationToken limit) in C:\Users\halco\Desktop\swarm\SwarmUI\src\Utils\Utilities.cs:line 312 at SwarmUI.Builtin_ComfyUIBackend.ComfyUIAPIAbstractBackend.AwaitJobLive(String workflow, String batchId, Action`1 takeOutput, T2IParamInput user_input, CancellationToken interrupt) in C:\Users\halco\Desktop\swarm\SwarmUI\src\BuiltinExtensions\ComfyUIBackend\ComfyUIAPIAbstractBackend.cs:line 368 at SwarmUI.Builtin_ComfyUIBackend.ComfyUIAPIAbstractBackend.LoadModel(T2IModel model, T2IParamInput upstreamInput) in C:\Users\halco\Desktop\swarm\SwarmUI\src\BuiltinExtensions\ComfyUIBackend\ComfyUIAPIAbstractBackend.cs:line 1058 18:12:37.343 [Warning] [BackendHandler] backend #0 failed to load model LTX-2-19b-Distilled-FP8-VAE-Included.safetensors 18:12:39.038 [Warning] [BackendHandler] No backends are available! Cannot generate anything. 18:12:39.038 [Error] [BackendHandler] Backend request #5 failed: No backends available!
hi looks like out of ram error please try with --cache-none args and let me know