https://www.pcgamer.com/a-recent-windows-10-update-is-hurting-game-performance-and-messing-with-mice/

If you've recently noticed that games are not performing as well as they once were, and neither is your mouse, it might not be just in your head. Microsoft confirmed there is an issue with a Windows update that is causing some wonky behavior.

Following the roll out of the February cumulative update for Windows 10 Version 1809 (KB4482887), some users complained of newfound performance issues, both in games and the way their mice were behaving.