I get a 0.5s screen freeze every time RDR2 auto-saves on my Fanxiang S790, why is it so laggy?

Whenever that auto-save icon pops up in the corner while I'm riding through the wilderness, the game just hitches. It's a tiny stutter, but it's incredibly annoying over a long session. The Fanxiang S790 4TB struggles with these fragmented writes, with response times jumping from 1ms to 120-180ms, forcing the main game thread to wait for the disk. I tried moving my save folder to a RAM disk, which stopped the lag, but I almost had a heart attack when I realized a crash would wipe all my progress. I eventually went into Device Manager, changed the disk policy from 'Quick Removal' to 'Better Performance' (high-performance write), and whitelisted the game from my antivirus. The I/O monitor now shows write peaks smoothed out between 400-600MB/s, and the freezing is gone. I had a few security warnings after disabling the real-time scan, but adding the game folder to the exclusion list silenced them. Drive temp is steady at 45-52℃, and HWiNFO shows zero errors over two hours. Memory temps are 58-63℃.