My Biostar H310MHD3 VRMs are overheating during fights in Phantom Blade Zero, how do I fix this?

Every time I unleash a wide-area skill, the FPS just tanks from 80 down to 35. It's incredibly frustrating. The Biostar H310MHD3 has basically naked VRMs, and under load, they were screaming at 98-105℃, triggering aggressive CPU thermal throttling. I tried lowering all the graphics settings to the minimum, which gained me 10 FPS but made the game look like a potato—I couldn't stand it. Instead, I rigged up a tiny 8cm fan to blow directly onto the VRM heatsink area and manually capped the PL1 power limit to 65W in the BIOS. Using RTSS, I saw the frame times stabilize from a wild 18-45ms swing to a consistent 12-18ms. I had some issues with the fan wiring at first where it would just stop randomly, but a new power connector fixed that. VRM temps are now staying between 75-82℃. The input lag is gone and the controls finally feel responsive again.