Tales of Arise is stuttering like crazy because my ADATA 4GB DDR4 2400 is maxed out, should I change the virtual memory threshold?

I thought I could squeeze by with 4GB, but in big battles, usage hit 98% instantly, and my CPU clock tanked from 3.6 GHz to 2.1 GHz. I tried dropping every setting to low, but the game looked like a blurry mess of pixels, and I only gained about 5 FPS—totally useless. I had to overhaul my virtual memory setup, switching from Auto to Manual and forcing a 16GB page file onto my NVMe SSD. Using HWMonitor, the swap frequency dropped from 10 times per second to just 2, and frame times tightened from 20-60ms to 15-22ms. I originally put the page file on an old HDD, which made the stuttering way worse until I moved it to the SSD. CPU temps stayed at 62-68℃ and RAM was at 40-45℃. Switched to high-performance mode and the scheduling is much better now, with RAM still at 40-45℃.