How do I fix VRAM latency spikes in Farming Simulator 25?

I felt the immersion break instantly when the tractor lagged during harvest. I tried increasing the page file, but RTSS showed frame times jumping to 16.7ms. Using GamePP Shader Compilation Queue Manager, I cleared the 4.2GB cache. 3DMark confirmed bandwidth rose to 92-96%, and HWiNFO showed temps stabilizing at 65-70°C.