What I found on W10 64 is that it refused to react after a folder was closed.
It took about 30 sec on v2 to come back, so I thought this would disappear in v3 - its still delaying, but a little shorter, now its 15-20 sec before it reacts.
Maybe my dock is too packed, but it was even more filled on XP and it never had this issue before.
Is there a setting I should try?