My RT500 can't keep up during huge army clashes in Warhammer III, causing CPU throttling and FPS drops. Should I limit the power?

This cooler is basically a paperweight when all cores are pinned; temps hit 98℃ instantly and my FPS crashed from 70 down to 30. I'm pretty sure this cooler is meant for office work, not massive war simulations. I first tried 'Power Saver' mode in Windows, but the game turned into a slideshow—that kind of 'optimization' is just ridiculous. I went into the BIOS and capped the long-term power limit (PL1) at 65W, while cranking the rear case fan to max to get the heat out faster. RTSS showed temps staying between 82℃ - 88℃; still a bit toasty, but at least the brutal throttling stopped. I actually tried pushing it down to 45W, but the game started freezing constantly, so I backed it off to 65W for the sweet spot. Clocks now hold steady between 3.6GHz - 4.0GHz. I exported the BIOS profile so I don't have to do this nightmare again, and the power config is backed up.