It could be tough to copy and paster information I posted in another forum and I will provide the link here.
My stats are all over the place, and I'm not convinced its always my "inside wiring". Many times all is well, so should the inside wiring be faulty, won't I have consistently low sync rates? Just my logic.
http://www.dslreports.com/forum/r22224309-slow-speeds-poor-sync