My game keeps crashing to desktop during huge campaign loads with G.Skill Trident Z DDR4 3200 8GB, why is this happening?

Whenever I'm managing my legions in a massive pitched battle, the game just nukes itself back to the desktop without any warning, making strategic planning a total nightmare. With G.Skill Trident Z DDR4 3200 8GB, the physical capacity is barely enough; after Windows takes its cut, I'm left with a pathetic 2.4-3.1GB, causing the page file to hit the I/O swap constantly. I tried killing every single background app, but it only freed up about 400MB, which was basically useless and left me feeling completely stuck. I eventually dove into the Advanced System Settings, manually assigned the virtual memory to my fastest NVMe SSD partition, and locked the size between 16-24GB while disabling useless memory compression services. Checking Resource Monitor, the commit charge peak dropped from 11.2GB and stabilized between 8.8-9.5GB, and the crashes finally stopped. Funnily enough, the first time I set it to 16GB, load times actually slowed down by about 5 seconds until I split the page file across two different channel drives. Memory temps stayed around 38-44℃ with load rates consistently above 90%. After exporting these scheduling logs, my frame times finally smoothed out to a consistent 5.1-6.4ms.