How to fix CPU heat soak on Jonsbo CR-1400 in VR mode?
Honestly, trying to run VR mode on this tiny cooler is a joke; in the tight tunnel scenes, my CPU was hitting 91-95℃. The single-tower scale of the Jonsbo CR-1400 ARGB is completely outclassed by the double-rendering pressure of VR, causing heat to pool in the fins and tanking my FPS from 90 down to 45. The resulting judder gave me instant motion sickness. I first tried capping the CPU TDP to 65W via software, but that pushed input lag to 30ms, which is a total disaster in VR—I almost threw my headset across the room. I eventually just ripped the side panel off the case and strapped a 120mm industrial fan to blow directly onto the heatsink while retightening the brackets. In the frame time analyzer, the wild 11-35ms swings finally flattened to 11-14ms. I initially blamed the GPU, but after some digging, I found the CPU IHS was hitting 62℃—classic heat soak. Now cores hold at 78-83℃ with fans at 2200 RPM. I've exported the fan curves to keep it stable at 78-83℃.
