FYI, pinned message from Unreal Slackers Discord…
For people getting DXGI_ERROR_DEVICE_REMOVED crashes with DirectX 12 on Unreal 5 projects, that’s a known issue for rtx 3000 cards and it’s a driver issue. Unfortunately, it’s unknown when Nvidia will fix it.
https://github.com/dyanikoglu/UnrealEngine/commit/6b6f4f77363865fb818df642e64a5522f5ed624d (dependency for actual fix)
https://github.com/dyanikoglu/UnrealEngine/commit/546c84799cfdfb2b6d5b06e829c9230dcdd56d73
If you’re using source build, just cherry pick those commits as temporary fix (they’re from ue5-main), or wait for 5.1 release.