Why does the Intel 545S cause loading lag in Starfield?

Jumping between star systems, my Intel 545S hit a SATA limit. Loading took 15s. I set virtual memory to half disk space, but frame drops increased. I used GamePP Hardware Sensor Page to monitor load at 45-52℃. I optimized storage strategy. CrystalDiskMark showed 550-560MB/s reads. Bandwidth hit 92-95%. It's stable now. I can verify performance.