Path Tracing Render Crashes on Large Project (RTX 4080 Super, 64GB RAM)

Development Rendering
,
1

Issue Description:
I’m working on a very large Unreal Engine project — a compound with around 1000 villas. The project also contains heavy foliage, and since I need to render many sky shots, I’m not using LODs (I want all distant details to remain visible).

The problem is that when I attempt to render using Path Tracing, Unreal Engine keeps crashing. Before the crash, I checked performance and noticed that both GPU memory and system RAM are maxed out.

System Specs:

  • GPU: RTX 4080 Super (16GB VRAM)

  • RAM: 64GB

  • Renderer: Path Tracing

Question:
Is there any way to render this project successfully without crashing, even if it takes much longer to render (I don’t mind long render times), or is this simply beyond the capability of my hardware setup?

I’m mainly looking for workflow tips or settings that would let me render the project at full quality without reducing mesh/foliage details.

2

Its certainly possible you are just asking too much of your card. Is texture streaming disabled? I would maybe start there. When you are rendering in MRQ you can hit the tilda key to bring up a command line in the render window which you can then use to ProfileGPU.