Say Goodbye to Frames in Games with Windows 11 Update

You wouldn't want to play Assassin's Creed Shadows with this version of the OS.

sdx15, Shutterstock

Microsoft's updates to Windows 11 frustrate users more often than not. Recall, which takes screenshots of your every action, forceful integration of Copilot AI, ads in the Start menu, and this is not the end: the October update, KB5066835, installed automatically, might be the reason for framerate drops in games.

Users have been complaining about system malfunctions and bad performance, and Digital Foundry can now confirm that these are not just words.

The outlet recorded "remarkably low" framerates on a Ryzen 7 9800X3D PC with an NVIDIA RTX 5090 GPU with the Windows update installed. In Assassin's Creed Shadows, the frames dropped from 33% to over 50%.

Other games, including Counter-Strike 2, have also been affected, according to NVIDIA, which rolled out a hotfix addressing the "lower performance" in "some games after updating to Windows 11 October 2025 KB5066835."

Unfortunately, it's not clear what titles in particular have suffered, but if you notice lower-than-usual FPS, try the fix.