I've recently reinstalled Windows 10 onto my PC after an issue with formatting my hard drive.
Previously all games worked flawlessly on borderless mode and I never ran into any issues at all. After the reinstall, all games continued to work except for league of legends. The game seems to think I'm getting 60 FPS in borderless mode but has a sort of "micro stutter" and tear when the camera moves (which is not at all 60 FPS). I've tried just about everything I can think of (I've gone through Microsoft and obtained an ISO of the build version of Windows I was running before I reinstalled, as well as run back through all of my GPU's driver update history) and nothing seems to be working. Wondering if any of you have had this issue and have solved it. Again, what's weird here is games like WoW, Fortnite, Rocket League and a few others have NO issues with borderless, just League.
As another aside, I've gone through and done the usual like turning off Xbox DVR etc.