How do I reduce page swap stutter in Rule the Waves 3?

During a sea race, frame times jumped from 10ms to 18ms, breaking the rhythm. I tried increasing virtual memory size, but it just made the system slower. I used the GamePP Memory Controller Load Monitor to optimize the strategy. AIDA64 showed memory temp stable at 38-42℃, and GamePP confirmed I/O latency converged to 5-8ms. The race feels responsive now.