[2020] [Bug/Glitch]New patch stuttering mouse movement

Hi there, UmlKaZe_! I'm terribly sorry to hear about this bug you've noticed in Rainbow Six Siege. Thanks for taking the time to write this post and get it reported! For starters, please verify the game's files in Steam. I recommend completing this process after updates, so it would be great to do since there was just a patch for the game today. It replaces any missing or corrupted files that may have popped up, then ensures everything else required for the game is properly installed. Afterward, you may want to try the other steps in our technical troubleshooting guide. If those suggestions do not help, please try to grab a video of the problem for me. Thank you!

Mintzzzzzz, thank you for providing this suggestion and wanting to help a fellow player!