SO I was having the same issue then I got on a chat with Nvidia and he took me thru a few things - I’m not sure which of these fixed it but here are the steps i did
- Changed in the nvidia setup to high performance and vertical sync on - mine was one globally and per editor so prob not what did it for me
- full install on graphics driver - wipes the old ones and puts in the new - reboot
- before I was rebooting I saw that crytek had a raytracing demo so I loaded cryengine and in the loading it said I was missing certain sdk’s and redistributables so I installed all of those - i feel this is what did it
- even before i rebooted it opened the Unreal and Unity project file that had raytracing activated and where crashing before I did those things