How to stop frequency swings on the Ryzen 7 9700X?
Dragging furniture in the editor had this irritating 'sticky' feel to it, and after a few hours of building, it became a total nightmare. It turns out the Ryzen 7 9700X PBO mechanism was aggressively switching frequencies during low-load tasks, causing core voltage to bounce between 0.9V and 1.35V, which created micro-stutters in instruction execution. I tried toggling Windows Game Mode, but that did absolutely nothing for the lag and actually crashed my browser in the background—a real facepalm moment. I went into the BIOS, switched PBO to Manual, locked the core voltage at 1.22V, and pinned the all-core frequency to 5.1GHz. Monitoring with MSI Afterburner, the frame generation interval shrunk from a shaky 15-30ms to a tight 11-14ms, and every click felt instant. I did hit a snag where the PC rebooted twice during the first boot, but tweaking the SoC voltage to 1.15V sorted it out. Now it runs cool at 62-68℃ with power draw around 85-92W. After a two-hour stress test, the stuttering is gone and RAM temps are sitting at 58-63℃.
