How to fix core scheduling issues on Ultra 9 285K in Minecraft?
When rendering massive ray-traced structures, my FPS would randomly tank from 140 down to 60, and the input felt completely mushy. The Ultra 9 285K was incorrectly assigning the main render thread to the E-Cores, causing execution delays to swing between 15-30ms. I tried disabling all E-cores in the BIOS, but that just crashed my background recording software. Instead, I used a process affinity tool to lock the game's main thread to P-Cores 0-7 and set Windows to 'Ultimate Performance'. My frame times tightened up from a messy 8-25ms range to a very stable 6.5-8.8ms. Initially, my CPU temps hit 88-92℃ after the lock, but a slight voltage offset of -0.05V brought it back to 78-84℃. The clock speed is now stable at 5.4GHz. Benchmarks confirm the scheduling is finally sorted at 6.5-8.8ms.
