Forum Discussion

Rising Novice

22 days ago

Battlefield 6 Mouse problem after last updates...

https://www.youtube.com/watch?v=C1rRAaR6uUg My problem is mouse stuttering/hitching in Battlefield 6, doesnt happen in other games just bf6, I tried lower my polling rate, verifying files, steam off...

Seasoned Newcomer

22 days ago

Hello,

The reason your ALT key trick works is the smoking gun: this is a confirmed bug with the EA Javelin Anti-Cheat system introduced in a late 2025 update. Essentially, the anti-cheat is aggressively scanning "normal" key presses ($WM\_KEYDOWN$), which causes a massive CPU spike on a single core, starving the mouse input thread. When you hold ALT, the system switches to "System Key" messages ($WM\_SYSKEYDOWN$), which bypasses the specific anti-cheat check causing the hitch.