Death Stranding 2 is hitting a power wall on my MSI A520M-A PRO. Why are my clocks dropping?

This motherboard is basically a straightjacket for the CPU. While trekking, my clocks would plummet from 4.2GHz to 2.1GHz, turning the game into a literal slideshow—it was pathetic. The default PL1 power limits on the MSI A520M-A PRO are way too conservative, causing the CPU to hit the ceiling and throttle immediately. I tried taking the side panel off my case, which dropped temps by 6°C, but the clocks stayed locked—physical cooling is useless against a hard power limit. I finally dove into the BIOS and cranked both PL1 and PL2 limits to their absolute maximum and locked the fans at 1800 RPM. Checking RTSS, my 1% lows climbed from 32 FPS back up to 58 FPS, and the stuttering vanished. The catch was that the VRMs instantly hit 95°C after unlocking the limits, so I had to rig up a small 40mm fan to blow directly on the MOSFETs to stabilize it. CPU temps now sit between 78-85°C. Exported frequency curves show a flat line with fans locked at 1800-1800 RPM.