How to fix I/O latency on Onda H610M motherboards?
Entering the village center was a mood killer because the screen would just hitch for a split second, which totally ruins the horror atmosphere. The Onda H610M chipset was struggling with streaming assets due to old microcode that didn't handle the NVMe protocol efficiently, leading to I/O latency spikes between 20-40ms. I tried messing with CPU affinity in Task Manager, but that just crashed my background apps—definitely a mistake. I ended up flashing the latest official microcode and forcing the PCIe link to Gen 3 in the BIOS to ensure absolute stability. In CrystalDiskMark, the random 4K read latency dropped from 32ms to 15-20ms, and the hitches are gone. I actually got locked out of my OS for a bit after the flash because the BIOS reset my boot order, but a quick fix sorted it. Board temps are 45-52℃, and the VRM is holding steady at 55-60℃.
