My A320M-HDV R4.0 causes huge frame drops in complex scenes in Dead Space 2 Remake, how do I fix this?

That suffocating feeling when your FPS suddenly tanks to 20 in a narrow corridor is actually your VRMs screaming for help. The ASRock A320M-HDV R4.0's power stages were hitting over 102℃ under the Remake's heavy load, triggering a brutal thermal throttle that crashed the CPU clock from 3.6GHz down to a pathetic 0.8GHz. I first tried capping the CPU TDP in Windows, but while the stutters stopped, my average FPS dropped from 60 to 35, which felt like a total waste of hardware. I ended up rigging a small 4cm fan to blow directly onto the chokes and set a -0.05V core voltage offset in the BIOS. Monitoring with HWInfo, the VRM temps dropped from 105℃ to a manageable 78-82℃, and the clock curve finally flattened out. I actually bumped the RAM sticks by mistake during the fan install and couldn't boot for a second, but a quick reseat fixed it. CPU temps stayed between 65-72℃ with a bit more fan noise. After a two-hour stress test, the drops are gone and RAM temps are sitting at 58-63℃.