Can I run Ghost of Tsushima with only 4GB of ADATA ValueRAM?

Trying to run this masterpiece with 4GB of RAM was a challenge, but seeing the fluidity improve was exhilarating! I first tried lowering all graphics settings to minimum, but FPS only increased by 5 and memory remained full, which felt hopeless. I used the GamePP Resource Scheduler to disable all non-essential services and manually locked virtual memory to 16GB on a high-speed partition. RTSS showed frame times converged to 22-35ms, and memory temperatures stayed at 38-44℃ per AIDA64.