How to fix 0.5s freezes in Nioh 2 with only 4GB Kingston DDR4 RAM?

During high-difficulty dungeon battles, every time I released a wide-area skill, the screen would freeze for 0.5 seconds, which was incredibly frustrating. I first tried closing all background software, but while I freed 500MB of RAM, the stuttering persisted, making the attempt feel inefficient. I then used the GamePP Resource Scheduler to set the game priority to highest and expanded virtual memory to 16GB. RTSS showed frame times converging from 18-60ms to 14-22ms, and GamePP confirmed memory utilization dropped from 94-98% to 82-88%, with HWiNFO temps at 40-46℃.