Is the PCcooler RT620P causing lag in Kingdom Come Deliverance 2?

Every time I entered a densely populated area, the game would hitch for a fraction of a second. In 4K, this kind of inconsistency is just anxiety-inducing. The PCcooler RT620P simply couldn't handle the transient heat spikes during CPU boost, leaving the core bouncing between 85-92°C. My first instinct was to try a power-saving mode, but that was a nightmare—I lost 20 FPS immediately. I eventually went into the BIOS and set a negative CPU core voltage offset of -0.05V and tightened the fan response time from 0.7s down to 0.1s. RivaTuner showed my minimums climb from 32 FPS to 55 FPS, with temps stabilizing in the 72-78°C range. I did hit a wall of instability right after the undervolt, but a slight tweak of the VCCIO voltage to 1.1V fixed the crashes. Fans now spin at 1200-1500 RPM. After a full stress test, the clock speeds stopped jumping, and the input lag is virtually gone.
Category:Real-time Monitoring Last updated:March 22, 2026 7:20 PM