Fixing CPU boost clock instability on PCCooler RT620P
The red maple forests in Tsushima are stunning, but the occasional tearing lines were a total immersion breaker. The RT620P actually performs well, but tiny temp swings between 68-75℃ were triggering the motherboard's hyper-sensitive boost switching, making the clock jump between 4.2GHz and 4.8GHz constantly. I first tried V-Sync in the NVIDIA panel, but that pushed input lag up to 40ms, making it feel like I was wading through mud—absolute torture. I ended up reinstalling the cooler with pressure pads to ensure 100% contact between the base and the IHS, then widened the boost variance threshold to 5℃ in the BIOS. In RTSS, the frame rate stopped swinging between 72-85 and settled into a tight 78-81 range. I had a scare where a voltage offset caused a calculation error and crashed the game, so I bumped the Vcore by 0.01V to lock it down. Now cores stay at 64-69℃ with fans at 1100 RPM. The tearing is completely gone, and fans are steady at 1100-1200 RPM.
