In saying all that, did you actually change graphics settings in whatever graphics card control panel you might have? Or did you just mess with settings within Windows and all itself?
Part of why I’m asking is if things work well with acceleration off but you have issues when it’s on, it guarantees that issue is with the graphics card. It can be any number of settings, but one of the things mentioned by some would be things like MFAA, such as discussed in link below:
Granted, the issue I linked to is different from yours, but just wanted to show as an example.