I think it may be due to the middleware they used to bridge the old code with unreal. This is not an Unreal game per se, they are using unreal for rendering graphics and ui mostly, every other thing is literally the same code as the original, with a bridge. I think the middleware is fucked up in your system, and probably is related to the other issues reported for win 10 on the error I pointed out.
If you are not capable of searching in the log files for specific clues, you can try upload them to chatgpt. It’s useful if they are extensive, and the task is like finding a needle in a haystack.
If you don’t want to do any forensics, I would suggest a clean OS install. Probably something in your system is interacting poorly with the chimera oblivion is. Without any forensics, you will never know what it is. That or hardware issue.
It’s poorly optimized. At version 0.4 is probably the first thing that looked decent, with final art in place, but no QA or optimization done. My bet is that they had to launch earlier than expected due to the rumors, or they extended way past the due date and the money for the project ran out. If successful, probably optimization will take place, but they are waging on it.