I personally noticed the problem on July 3rd.
When I want and hover my mouse over a tab, be it Airports, Search and so on.
The remaining icons begin to randomly change their image. I would say that there is a blur, a decrease in sharpness.
Further, when I select an Airport by its ICAO code, another nearby point can also be highlighted, it’s not clear why.
What have you tried, if I may ask? Which steps did not work?
It is very likely to be GPU-related, yes. That is, unfortunately, all I know myself too - this is not a “normal” issue nor an issue with our software!
Try upgrading or downgrading your GPU driver, changing scale settings in the Windows settings etc. - or even try connecting the monitor to your motherboard directly (if you have the ability to do so) to rule out a bad GPU.