as i have said before, a Microsoft Drive Optimizer - Wikipedia is a magic wand. Theres simply nothing else what can help, if windows plays stupid. Not any defragmentations, nor any stupid 3rd party programs, not a cache, nothing will replace, what windows suppose to do on its own. And this tool unlocks it.
Press “analyze”, it can unlock drives hidden powers (actually window’s hidden powers).
Do the test before and after on storj’s blob folder, “right click → properties”. if it counts files same slow, restart the pc, and do the analyze again.
This effect is lost every restart or disk dismount, so You have to redo it, but its worth it, it makes filewalker runs x times faster, on bare metal for sure.