How to fix cache latency on Ryzen 7 9800X3D in Minecraft?
Entering dense forest biomes felt like my PC was choking, and that kind of lag is just wrong for a 3D V-Cache chip. Looking at the logs, the L3 cache on the Ryzen 7 9800X3D was huge, but in RTX mode, my memory latency was swinging wildly between 72-85ns. I tried dropping the render distance to 8 chunks, but the game looked terrible, and I couldn't stand the limited visibility. I finally updated to the 6.12 chipset drivers and swapped the BIOS memory profile from Auto to EXPO, locking it at 6000MHz. In AIDA64, my latency dropped instantly to 64-68ns, and the smoothness was night and day. I actually had two failed boots after enabling EXPO, but a tiny SoC voltage bump from 1.2V to 1.25V fixed the instability. My CPU stayed between 55-62℃ with fans at 1200 RPM. After an hour of stress testing, the drops are gone and RAM temps are sitting at 58-63℃.
