Overview
- Digital Foundry found Assassin's Creed Shadows suffering roughly 33% to 50% lower frame rates after KB5066835 on a Ryzen 9800X3D and RTX 5090 test system.
- Nvidia released GeForce Hotfix driver 581.94 to address the regression, with the company stating the fixes will roll into the next official driver.
- User benchmarks report large gains after installing the hotfix, including cases near 50% or more and notably higher 1% lows that reduce stutter.
- Nvidia describes the hotfix as a targeted beta based on its latest Game Ready release, and performance improvements vary by game and hardware.
- Microsoft has not issued its own fix, the exact cause remains under investigation with DWM/MPO changes suspected, and the impact on AMD and Intel GPUs is still unclear.