Nvidia issues hotfix driver to resolve Windows 11 gaming issues

Nvidia recently released new drivers for Call of Duty: Black Ops 7, but it has now been forced to issue an emergency hotfix. The company confirmed that a significant performance regression in several games was caused not by its own software, but by Microsoft’s recent Windows 11 October 2025 update.

Nvidia's Hotfix Display Driver version 581.94 was released specifically to mitigate performance issues caused by installing the KB5066835 update (via Videocardz). This patch, which affects various Windows 11 versions, was causing lower frame rates and stuttering across multiple titles. Although Microsoft's official “Known Issues” list does not mention the problem, user reports immediately suggested smoother performance in games like Black Ops 7 and Battlefield 6 after installing the hotfix.

The 581.94 hotfix is an emergency beta release based on the existing Game Ready Driver 581.80. Users who are not currently experiencing performance problems with the affected Windows update are generally advised to wait for the formal WHQL driver release for maximum system stability. However, if you want to download it right away, you can get it HERE.

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KitGuru says: Did you update your Windows with the KB5066835 package? Have you noticed any performance degradation? 

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