Have you tried running it at the lowest graphics quality? I'm asking since on the lowest quality setting there is no VSync enabled, perhaps that can make a difference in case it is a screen refresh sync issue.
Sorry there are so many changes made to the latest version that it would be too much work to go back to the old codebase.
If there is no way you can get it working email me at fpvfreerider@gmail.com and I will arrange for a refund.
I have tried lowest quality, small screen resolutions but nothing works. I'll email you.
But I wonder you mention too much work to get en old code base. Do you not using a version control system like git? I code by my self and the first thing I do when I start a project is to set up a (local) git repository...
Perhaps memeber lrs can help you (see message below). I don't use git, I do have an own system of keeping track of old code, but since I increased the physics simulation accuracy I made a lot of changes and it's not so easy to just change it back since the physics frequency affects a lot of things and it needs to be tested very thoroughly to not introduce any sync issues.
