I had a nagging problem that when I opened an explorer window from Win7 to unRAID, the window was blank for a few seconds before getting populated.  And occasionally, copy jobs hung with ""Discovering items" etc.  Copies were "choppy" in terms of performance.

 

Decided to get serious about debugging it today.  Booting into safemode with networking, and the problem went away... so I disabled all non-microsoft services, and went through re-enabling them a few at a time.

 

"Intel ProSet Monitoring Service" appears to have been the culprit. With it disabled, all the problems went away. 

 

Anyone with Intel NICs and experiencing slow or choppy performance with explorer windows or file transfers, might consider disabling it temporarily to see if it improves things.

Thanks for the info bubbaQ!  I will test this and report back my findings as well.  Buggy performance copying files from PC to UnRAID with Windows 7 x64 and UnRAID v4.7 final and v5.0.4 still happens on my system from time to time; albeit, less frequently with v5.0.4 and even less frequent with relatively empty drives (<50% full).

 

EDIT:  I forgot I already changed to Realtek NIC which seemed to also help but not fully eliminate my issues (which could be slightly different than yours (see here: http://lime-technology.com/forum/index.php?topic=16286.msg156615#msg156615 as well as the link in that post).