Question NAS Running Horrendously Slowly, Only from One Machine Though

[koberulz]

This thread has gone so long, I have lost some memory ... Have you booted a portable Linux and tested ? That is the only definite way to eliminated a Windows issue.

If rebooting the machine resolves the issue, rebooting into Linux doesn't prove much of anything, but yes.

I couldn't type in the IP into the File Manager, but I was able to navigate to the NAS through the navigation bar on the left of the File Manager, and it all worked fine. I was also able to mount it from the terminal. But again, a fresh Windows boot is also fine, although I'm not sure how long for, so it's difficult to say whether the Linux boot working means Linux is fine or just that fresh boots are always fine.

WinSCP access to the NAS works just fine. YouTube has become unusably slow, with videos hanging entirely midway through. I'm at a loss here.