My CPU is throttling in The Sims 5 during city construction with a Jonsbo CR-1400E. Do I need to fix my case airflow?

While building out large communities, my frame rate would randomly dip from 60 to 35. It was super annoying. Monitoring showed that the Jonsbo CR-1400E was suffering from major heat soak during these simulation-heavy loads, with temps hovering between 85-91℃. I tried lowering the in-game settings, but the game looked like a potato and it still didn't fix the underlying heat—not an option. I ended up rearranging my chassis fans, switching the front ones to high-static pressure mode, and setting the CR-1400E to hit 100% full blast at 72℃ in the BIOS. HWiNFO now shows peaks clamped at 76-82℃, with clocks staying between 3.6-3.9GHz. I had some weird case resonance after the fan swap, but adding some rubber dampeners killed the noise. Fans now sit at 1300-1600 RPM. Stress tests confirm the throttling is gone.