I keep facing the same issue. My Unreal Engine Fully Freezes.
I checked the GPU profiling and I thought maybe this information would be useful.
It’s always some light that takes for example 800ms to render. It’s not a specific one though. It changes every time the crash occurs to one or two specific lights so don’t delete the lights because the light that takes too long to render always changes.
I have a 4090 and I’m still experiencing this. I even posted a thread about this. A sudden spike on GPU / 100% GPU use