Fixing PCIe bus errors on ASRock Z370M Pro4 in Helldivers 2
Every time I threw down a stratagem, the game would just vanish to the desktop. It's incredibly stressful when you're in the middle of a co-op mission. The PCIe 3.0 bus on my ASRock Z370M Pro4 was hitting sync delays of 12-18ms during heavy data bursts, which caused VRAM address mapping conflicts. I tried lowering every single graphics setting to the absolute minimum, but it still crashed just as often—a completely pointless exercise that left me feeling defeated. I ended up flashing the BIOS to the latest version and forced the PCIe slot to Gen3 instead of 'Auto,' while also killing the Fast Boot option. GPU-Z showed the bus latency dropped from 15-22ns down to 9-12ns, and the game finally stopped crashing. I actually almost bricked the board when a power outage happened during the BIOS flash, and it took two hours of recovery mode stress to fix it. CPU temps are now 62-70℃ and the southbridge is at 55-61℃. DXDiag confirms the memory overflow is gone, and I can finally play without anxiety.
