PBE Problems

Ok i had been accepted for the pbe for a while now and here something i noticed. Every time i play it always lags. like have this ever happen to any of you guys. I live on the east coast and my ping on pbe is always so high but only on pbe .when i play on live servers my ping is a 72 . I know its not my internet all the time,Is this a problem with the pbe server? i really wish this would stop happening the pbe has become really not fun to play on because of this. If this ever happened to anyone pleasee tell me your experience with it