At least it did for me according to web based speed tests. Now, if somebody wants to post and tell me that it really isn't a problem and that it just looks like a problem, then I won't argue it at this point, because I haven't extensively tested it with actual uploads. But if anyone sees speed test upload speeds 20x slower than they should be, this may be the reason why.
BTW, this is an Asus Sabertooth Z77.
BTW, this is an Asus Sabertooth Z77.