Workaround

So after trying to run Unreal Engine, I actually got a good error report. Bad news is my GPU is bad... Good news is it's under warranty. Bad news is I have to pay for shipping. Good news is I can get it fixed.
More good news is for the time being I can use my old 2080 to continue working on the game while I wait for them to send me a new 4090.... Bad news is I have a proprietary PSU so I can't just use my normal VGA cables to hook the 2080 to my PSU. And so I have to go get special ones.

TL;DR
I'm sending my GPU back. I have a 2080 I can use to continue making the game for now. I just have to get some special cables first.