Solving memory and cache issues on Ryzen 7 7800X3D
The default scheduling on this CPU is a complete joke; the moment the load spikes, the frames just dive, which is honestly pathetic. While the 3D V-Cache should help the 1% lows, the default FCLK was causing sync fluctuations of 15ms - 22ms, leading to a subtle but noticeable jitter. I tried enabling PBO auto-overclocking in the BIOS, but while the clock speed went up, the minimum frames actually became more unstable, which was just a waste of time. I eventually locked the FCLK frequency at 2100MHz and tightened the RAM timings to CL30. Using RTSS, the frame time variance dropped from a wild 12ms - 28ms down to a tight 8ms - 11ms, making combat feel way more responsive. I had a minor driver crash right after locking the frequency, but bumping the SoC voltage to 1.2V fixed it for good. CPU temps are great at 62℃ - 68℃. I saved the BIOS profile via a system snapshot, and the temp is holding at 62℃ - 68℃.
