Yes, same problem here. I assumed it is because we have hundreds of clients.  We didn't use the NAS setup until this year since we added a couple of additional employees and dealing with this a few times per day is seriously slowing down our speed and when you're dealing with as many clients as we are you can't have a slowdown. 

I'll be watching this thread to see if any help is offered but from what I'm reading it seems as though PS sees it as a non-issue type issue.