Fixing AMD Ryzen 9 9950X3D cache sync lag in Scarlet Nexus?
During high-speed spatial shifts, the frame rate would wildly jump between 144 and 80 FPS—it was a miserable experience that made me want to smash my keyboard. Even with the massive 3D V-Cache, the sync latency between the memory controller and the cache was fluctuating between 80-110ns at high clocks, which killed the instruction throughput. I tried adding 32GB of virtual memory, but while the RAM usage percentage dropped, the latency didn't move an inch—a completely pointless waste of time. I eventually went into the BIOS and bumped the SoC voltage from 1.1V to 1.2V, and dialed the RAM frequency back from 6400MHz to 6000MHz for better stability. AIDA64 showed cache latency plummeting from 95ns to 62-68ns, and the micro-stutters basically disappeared. I did have a hard crash when first trying 6400MHz at low voltage, which I only solved by pushing VDD to 1.35V. CPU temps are at 55-65℃ and VRM is at 60-68℃. Saved the BIOS profile, and the input response is finally pinpoint accurate.
