How to stop Great Wall GW3300 2TB from overheating in MGSV?
About thirty minutes into a session, the game suddenly starts micro-stuttering, like the whole world is freezing for a split second—classic NVMe thermal throttling. The Great Wall GW3300 controller was spiking to 80-85℃ under load, causing my read speeds to plummet from 3500MB/s to under 1200MB/s. I first tried locking the PCIe link to Gen3 in the BIOS; it dropped the temp by 8℃, but the bandwidth loss was huge and the drops still happened, which was a pretty disappointing compromise. I eventually swapped in an M.2 module with an active cooling fan and disabled the HDD power-saving mode in the Windows power plan. Monitoring the sensors now, the controller stays pinned between 60-65℃, and reads never dip below 3000MB/s. I actually struggled during installation because the thermal pad wasn't flush, which actually raised temps by 4℃ until I reseated it. Now it's steady at 52-60℃. Two hours of stress testing and it's finally rock steady.
