Asus x670e Game Stuttering Windows 24h2

To fix the stuttering issue, open Device Manager and navigate to 'System Devices.' Locate the Thunderbolt Controller, then open its properties. Under the 'Power Management' tab, uncheck 'Allow the computer to turn off this device to save power.' After applying the change, restart your game. In my case, this resolved severe frame rate drops in Fortnite, where performance plummeted from 153 FPS to just 7 FPS, causing noticeable stuttering.

Let me know in the comments if this fixed your issue.