Many little ogg Files make my PC “Crash”

While moving little ogg vorbis files, my pc takes forever, even with low amounts. Afterwards my PC is really slow and i have to restart via the Case button, beacause Windows-Explorer is hanging itself up (In other Files moving app this works fine, but would rather do it in Windows-Explorer). On my NVME SSD (Got it afterwards so that’s why it isn’t my boot drive) everything works fine. They are both 70 – 80% Full and about 1 1/2 and 1 year old.
Specs:

Ryzen 5 2600 (Planning to upgrade)
RTX 2070 Super
Asus B450-F Gaming 
SSD1: (Problem): Kingston A400 960GB 
SSD2: 500GB WD Blue SN550