Why does Minecraft RTX stutter in dense forests with KingBank RAM?

I was rendering high-density ray-tracing forests when the screen started jumping violently, totally killing my immersion. I tried increasing the system page file size, but frame rates stayed unstable between 42-68 FPS per RTSS, which didn't fix the root cause. I then used the GamePP Resource Scheduler to force the game's main process priority from Normal to Realtime. After this, FrameView analysis showed frame times dropped from 18-32ms to 11-14ms, and memory temps hit 45-51℃ per HWiNFO64, while AIDA64 showed a 62-68% controller load.