I have small freezes while browsing USB3.0 pendrive (Kingston DataTraveler Ultimate 3.0 G3 32GB). Transfer is great, everything works but double click on folder gives me small freeze (0.5 to 1 second) which is not happens when I'm using Windows Explorer (then I can enter every folder without any delay). Why?
There could be lots of reasons for that.
Using a tool like Process Monitor to see what is being accessed on the drive (and if any operations are taking a long time) is what I'd do to get a handle on what's happening.