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Nvidia confirms that Windows 11's October update hurt gaming performance, releases a patch

Windows 11 October 2025 update (KB5066835) caused reduced in-game performance on some Nvidia GPUs. Nvidia released Hotfix Display Driver 581.94 to address the issue; download it from Nvidia's site.
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Windows 11 Update Hurts Games But NVIDIA's GeForce Hotfix Driver Is The Cure

NVIDIA is pushing out an out-of-band GPU driver update to resolve an issue introduced with Microsoft's October 2025 update for Windows 11 (KB5066835). According to NVIDIA, the Windows 11 update can ...