How to stop Valkyrie V360 Merlin pump instability in Horizon Online?
Those 1% Low frame drops during combat were absolutely killing the fluidity, and I only realized it was a pump issue when I saw CPU temps swinging wildly around 92°C. The 'smart' pump mode on the Valkyrie V360 Merlin has way too much latency when hitting instant high loads, so the coolant flow just can't keep up with the heat output. My first instinct was to max out the fan speeds in the software, but while the noise went through the roof, the temps kept jumping—a total waste of time. I went into the BIOS, switched the pump header from PWM to DC mode, and forced it to a constant 100% speed, while setting the radiator fans to exhaust. Checking RTSS, the frame times tightened up from a chaotic 16-42ms range to a smooth 13-17ms. I noticed a high-pitched whine from the pump right after locking the speed, but that went away after I slightly adjusted the radiator mounting angle. Core temps now hover between 74°C - 80°C. After a 2-hour stress test, thermal throttling is completely gone and memory temps are sitting at 58°C - 63°C.
