Solving PCIe link instability on Galax H310M Warrior D4
It was honestly ridiculous—I'd be walking through the fog and the screen would just rip in half, which was more terrifying than the actual monsters. I found that the PCIe link on the Galax H310M Warrior D4 was flipping between Gen2 and Gen3 in Auto mode, causing instant latency spikes of 15-25ms. I tried updating the GPU drivers first, but that actually made it worse, increasing the stutter frequency to three times a minute. I stopped wasting time and went straight into the BIOS, forcing the PCIe slot speed to Gen3 and updating the chipset drivers. Looking at the RivaTuner frame time graph, the spikes dropped from 12-38ms to a smooth 11-15ms, and the tearing stopped completely. I did have a couple of cold-boot issues where the GPU wasn't detected after locking Gen3, but a CMOS clear fixed it. The board temp stays around 45-52℃, and I've exported the system logs to confirm the link errors are gone. Fans are steady at 1400-1600RPM.
