USB stick freezes explorer

So I got this (8 Gb FAT32, barely 2 years old) usb stick and I have been using it only on my personal computer.
For some reason whenever I open any file (They all show up normally) the explorer stops working and the moment I remove the usb stick everything goes back to normal.
I tried analyzing it for problems and also formatting but both operations simply didn’t respond.
One last detail I can mention is that the usb stick doesn’t show in the Defragmentation list.
Is this a software problem that can be fixed? Thanks.