No. Windows itself already manages those settings is a way the will work for both parties (the Server and Client). I would also avoid the advice given just based on an earlier post that stated: "20% bandwidth Windows is stealing from you". Which is 100% wrong and has been since forever.
The only time one should turn Window Scaling off is when you are behind broken hardware. For those that do not know, Window Scaling is part of the TCP standard and is for increasing performance.