Think i've found the problem, i'll wait for you to confirm before i mark it as solved, and also to make sure it really is fixed.
I had my in game resolution downscaled to 125%, i've put it back down to 100% and it seems to have fixed it. Let me know if it works for you.
I tried fiddling with the various video settings, including the rendering scale, but with no success. Also seeing how my problem persisted since the day one and yours after the recent update, I'm starting to guess that mine and yours are from different causes, while it may seem the issue is the same.
I solve this issue when I set the render scale to 100%, everything went back to normal. But it's a shame that I can't get better graphic because of that...
Setting the scaling back to 100% worked for me too. The menu was so laggy it was unusable. Once I was in game it worked flawlessly. Just the menus were completely broken.
