Neverness to Everness has read delays on Great Wall GW3300 after long play, should I verify?

I've always been cautious with this entry-level Great Wall GW3300, especially since loading times in Neverness to Everness increased once the drive hit 80% capacity. I first tried manually clearing 50GB of junk, but the lag persisted, and the feel was still not smooth. Then I ran the GamePP System Backup & Config Export Tool's health check for a deep scan, finding that data blocks were too fragmented, increasing seek times. I carefully ran the 'Space Distribution Optimization' in GamePP to rearrange core game files and performed 5 rounds of read/write stress tests. Monitoring showed speeds stable at 2100MB/s without crashing.