Rescanning Folder

[Steven]

Just re: continuous monitoring, what Zak said is spot on.
As to the original reported problem for "Files are not found in location". One suggestion I have - can the drive letter of your external drive change when you restart windows?

[Zak]

So why is it taking him two days to scan 100,000 files, and why does he need to relocate his files every time he starts the program then, Zak?

I don't know, but will concede I missed the bit earlier about the use of a USB hub. Maybe it's dodgy.
OP could run something like CrystalDiskMark to check the actual transfer speed of the drive.

[frankz]

I'd be interested to know if the actual problem has been resolved despite the theoretical speculation about why it shouldn't have been.

[Zak]

Nice snark.

[frankz]

About 1/3 snark and 2/3 general curiosity.