Moving files slow

Why does it sometimes take such a long time for Opus to move large files from one location to another on the same disk? A dialog box pops up with a progress bar and sometimes it can take up to 30 seconds before moving a couple of files has finished.

Anti-virus scanner, perhaps. What type of files are you moving? Do you see similar if you move them with something else?

Hm, looks like you're right. The last ones I moved were all exe files, and if I turn off the AV (Avast) they all move instantly. If I turn AV on again it's getting slow again.

I just don't recall ever having seen this behaviour with Explorer, but then, I shifted to Avast from another AV program after I replaced Explorer with Opus, so the old AV program probably didn't scan so intensely. I've just tried the same thing with Explorer, and it's actually just as slow as Opus.

Well, problem solved I guess. Thanks!