Why does my Huntkey Blizzard T620 cause frequency drops and lagging in dense vegetation in Far Cry 6?

Watching my frame rate bounce violently between 60 FPS and 30 FPS was infuriating; I honestly thought my GPU drivers were toasted. After comparing logs, I found the Huntkey Blizzard T620's default fan curve was way too sluggish, not reacting until the CPU hit 80°C, which let heat soak into the fins. In a moment of desperation, I toggled 'Ultimate Performance' in Windows, but that just pushed the CPU over 100°C and made the throttling even worse—literally adding fuel to the fire. I went back into the BIOS, cut the fan response time from 2s down to 0.1s, and pinned the 75°C mark to 1600 RPM. HWMonitor confirmed the core temps dropped back to 72°C - 78°C, and the frequency dipping stopped completely. The fans sounded like a jet engine at midnight at first, but switching to a 'Smart Mode' curve finally hit that sweet spot of silence and cooling. Now the CPU stays between 68°C - 74°C with zero performance loss. Redefining the response logic fixed the whole mess. The input lag is gone and it feels incredibly responsive.