The Task Manager usage is not actually telling the story. It’ll always show you’re within your 16GB of VRAM as that’s your max anyway.
Go into the simulator settings, in Advanced, enable Developer Mode. A bar should appear at the top. From the menu on the left, in the Debug menu, select the Display FPS.
See when the message appears by looking at GPUMem at the bottom of the strip. It probably hits the max available, at which points the sim starts unloading to page file and lowering LODs, etc., to cope. You should also get this message.
The message itself is super annoying, and I think you still have a valid bug here because it keeps popping up repeatedly, but it should tell you that you’re running hot on VRAM.
For devs: can we please make this message toggleable in the Settings ? Pop-up a warning when disabling it that we won’t know when we’re running out of VRAM, but please.
Things to alleviate RAM usage:
- Disable Frame Generation - this eats vram
- Disable raytraced shadows - this eats vram
- Disable REBAR from the Bios if you have it enabled - this will cause the sim to use less vram and also enable more vram to be available
- Enable DLSS4 or FSR4 on Quality if you’re running 4K, rendering lower will free up some VRAM.
I always monitor with GPUmem and it shows the same values.
I know situations when my GPU RAM runs out and then the message appears. This was not such one and a clear bug. GPU memory exceedings show me heavy stutters when they come up. In the above situation everything was butter smooth
I can confirm, having tested it today, that turning off Rebar significantly reduces the number of “low VRAM” messages.