How to fix voltage lag on PCcooler RT500 TC in Forza Horizon 5?
While screaming down the highway, I'd get these bizarre 400ms pauses that are absolutely lethal in a racing game. The default voltage scheduling for the CPU paired with the RT500 TC was way too conservative, creating a 10-15ms gap when jumping from 0.8V to 1.3V, which put the CPU in a brief wait state. I tried disabling Core Parking in the Windows power plan; it felt snappier, but my idle power draw jumped by 12W, which felt inefficient. I realized the fix had to be in the BIOS. I switched the CPU voltage mode to 'Offset' and applied a +0.02V positive offset to raise the voltage floor. In the RTSS frame time analysis, the peaks dropped from 35ms to a tight 14-17ms. I actually tried +0.05V at first, but the CPU instantly spiked to 92℃, so I dialed it back to +0.02V for the sweet spot. Core temps are now steady at 74-80℃. Voltage scheduling is finally dialed in.
