Why is my external SSD suddenly transferring files so slowly?

Judging by those CrystalDiskMark stats you shared, it seems like a normal transfer speed for an external SSD. Good news is you're not seeing zero transfers, which means it's still working. It might just be a temporary hiccup. Check that nothing is interfering with the connection and keep an eye on how it performs in future transfers.

I totally get your frustration! If you're moving games one at a time and Steam does cut-paste transfers, it should generally be smooth. Your RAM seems fine, and since you're not overheating, you might be looking at a cable issue. If the cable moves even a little, it can disrupt the transfer. If you've secured everything and the SSD is running well in tests, maybe reboot your system and try again—sometimes a reset can clear up weird issues.

It sounds like you've covered a lot of bases already! When you're moving games, make sure you're not transferring too many at once or running other heavy applications that could slow things down. Sometimes, even the way your drive is connected can affect speed. If the cable is loose or sensitive to movement, that could really mess with the transfer process. Also, if your RAM usage is high, that could affect performance too. Did you check your SSD's health? If it’s not showing any issues in CrystalDiskInfo, that’s a good sign.