My loading times in Remnant 2 are abysmal now that my 660P is almost full. How do I fix this write speed drop?

It's absolutely unbearable. I have a 2TB drive, but once it hit 70% capacity, it started performing like a decade-old mechanical hard drive. The QLC NAND in the Intel 660P 2TB is the culprit; once the cache is exhausted, write speeds crash from 1000MB/s to a pathetic 150-200MB/s, causing 3-second freezes during scene transitions. I tried using third-party software to force a TRIM command, but the speeds stayed in the gutter—a complete waste of time. I eventually cleared 300GB of junk and disabled the disk write cache in advanced system settings to prevent latency buildup. AIDA64 tests showed read latency dropping from 85-120ns to 60-75ns. I did notice that disabling the cache made small file copies painfully slow, so I had to re-enable it and just stick to a strict over-provisioning strategy. Temps are 38-45℃. The performance is back, but it's a constant battle with QLC limitations.