ok there seems to possibly be some issue on the node as just after wincf came up, the entire node went down on network, We are checking for any sign of attack or problems on WINCF network now.
Not seeing anything extremely high anywhere on network and the node level is up slightly over normal (even with wincf4 still down at moment we are checking that too), but that should not impact greatly all 3 servers on it (wincf/wincf3/wincf4 are on this node)
Not sure why the speed of copy fell off a cliff there, but have a feeling it may be something to do with the slowness of the server when it was on as well.