I have the same exact issues! Please Vincent could you explain or tells us about a solution on the way? I have deadlines for my project and the Path Tracer is driving me crazy on the new 2023 version. In my case I'm trying to open a 2022.3 project with the conversion tool, and 2 out of 3 times when it does open correctly and I try to use the PT it goes black and crashes after a few seconds. I'm using a new computer with RTX 4090 and also 64 GB RAM so I'm sure the GPU is not the problem. Thank you in advance.