Microsoft released the October 2026 Patch Tuesday update (KB5127648) for Windows 11, which fixes a mouse input stuttering bug affecting certain games. This issue was acknowledged in the release notes, stating that the update resolves the stuttering problem. The fix was not included in the optional preview released on September 22. While specific causes and affected games were not disclosed, anecdotal evidence suggests the problem originated from Windows itself. Users reported erratic mouse behavior in games like Star Wars: The Old Republic and Final Fantasy XIV, with persistent issues even after trying various fixes. The update brings Windows 11 versions to Build 26300.9711 for 26H2, Build 26200.9711 for 25H2, and Build 26100.9711 for 24H2, marking the final release for Windows 11 24H2 Home and Pro. An offline installer is available for those having trouble with Windows Update. If stuttering continues, users are advised to check for outdated drivers or other potential issues.