Are you talking about Mavericks? I'm still on Mountain Lion and Windows drives take a little while, but I wouldn't call it a nightmare. I guess what I'm asking is: did SMB get worse on Mavericks?
[0] https://discussions.apple.com/thread/5470025?start=0&tstart=... [1] http://cammodude.blogspot.com/2013/10/os-x-109-mavericks-wor...