Known issueFixUpdated
Mouse Stutter and Low FPS
Short answer
Suggested fix (from YouTube, unconfirmed): Lower your mouse polling rate to 1000 Hz. Polling rates above 1000 can overload the CPU in certain games and cause severe frame drops when moving the mouse.
The problem
How to fix frame drops and stuttering while looking around?
What players suggest
Lower your mouse polling rate to 1000 Hz. Polling rates above 1000 can overload the CPU in certain games and cause severe frame drops when moving the mouse.
Video guide
Did this work for you?
Source: original YouTube video. Quotes are shortened; all credit goes to the posters. Tags: performance