I used to play this game just fine in Win10 but now it won't even launch. I made the res proper (3440x1440-32) and even tried other resolutions, no difference. No errors or anything, just refuses to launch. Any ideas? I tried looking thru the forums and nothing seems to work.

9900K/RTX3090

I had the same issue. I fixed it by setting the resolution to a 4:3 aspect ratio. In your case, this would be 1920x1440.