Microsoft admits Windows 11 bug caused mouse stutter in games

Microsoft has acknowledged that a Windows 11 bug caused mouse input to stutter in some games. The fix shipped in the October 13, 2026 security update KB5127648, though Microsoft did not list affected games or hardware.

• Fix included in the October 13, 2026 update KB5127648
• Reports of mouse stutter date back to February 2025
• Microsoft did not name affected games or hardware
• Users reported the issue in SWTOR and Final Fantasy XIV