How do I stop memory throttling in Human Host races?

During mud track racing, memory dropped from 3600MHz to 3200MHz, causing stutter. I tried adding more fans, but it didn't help. I used the GamePP Hardware Sensor Page to adjust the fan curve. AIDA64 showed temp stable at 62-65℃, and GamePP confirmed frequency holding at 3550-3600MHz. The verify step confirmed stability.