Dealing with USB input delay on Galax H310M in Tekken 8
It was absolutely ridiculous—every time I tried to land a critical move, my directional keys would just hang. It's a total nightmare for a fighting game. Monitoring the USB bus on the Galax H310M Warrior D4, I noticed that when the GPU was pegged at 100%, the port voltage was fluctuating between 4.75V and 5.25V, creating massive electromagnetic interference. I tried swapping USB ports, but that just made my cable management a mess and didn't fix the jitter. I finally went into Device Manager, disabled all 'Allow the computer to turn off this device to save power' options for the USB Root Hubs, and ripped out every unnecessary RGB strip to lower the bus noise. Using a latency monitor, the response time tightened from a wild 15-45ms swing down to a steady 8-12ms. The funniest part was that I spent $200 on a new controller thinking the hardware was dead, only to realize it was a motherboard issue. The board stays around 50°C - 55°C, and the event viewer logs show no more USB errors with fans at 1400-1600 RPM.
