In Space Marine 2, my Jonsbo CR-1400 seems to heat soak during big battles, causing lag. Do I need more case intake?

Fighting waves of Tyranids is great until the screen starts hitching, which totally ruins the immersion. The Jonsbo CR-1400 is a compact cooler, and it just can't move heat fast enough during high-power bursts, leading to heat buildup at the base and temps swinging between 85-92℃. This triggered some light throttling. I tried 'Ultimate Performance' mode in Windows, but it only gave me 2 extra FPS—a total waste of time since the bottleneck is clearly physical. I went into the BIOS, pushed the fan ceiling to 100%, and slapped two high-static pressure fans in the front of the case to force more cold air in. RTSS showed my frame times tightening from 18-35ms down to 14-17ms. I had a bit of a resonance vibration after adding the fans, but some rubber dampeners killed the noise. Now the CPU sits comfortably at 78-83℃. Stress tests prove the thermal parameters are verified, though this cooler is definitely pushed to its absolute limit.