How do I fix the core scheduling mess on the Ryzen 9 9950X3D?
When facing high-difficulty Yokai, my frame rate would suddenly tank from 165 FPS down to 90 FPS, and that stuttering was driving me insane. The dual CCD architecture of the 9950X3D clearly struggles with this older engine, causing a scheduling delay where the 3D V-Cache doesn't kick in for the main game thread. I first tried toggling Windows Game Mode, but the frame times were still jumping between 15-30ms—completely useless. I eventually used a process affinity tool to force the main game thread onto the first CCD (the one with the 3D cache) and switched my power plan to High Performance. Checking RTSS, the frame times tightened up from a wild 6-22ms swing to a consistent 5-8ms range. It wasn't a smooth ride; I actually hit a system deadlock that crashed the game a few times until I loosened the E-Core scheduling threshold. Now, CPU temps sit between 62-68℃ with clocks steady at 5.2GHz. HWInfo shows the cache hit rate climbed above 94%, and frame times are locked in at 5.1-6.4ms.
