Infinite Game creation Diablo 3

on diablo 3 itll go into creating game on a almost infinite loop, (showing loading but never create) it will eventually time out and when i try to recreate game it will finally go through.

Is this a network issue? or something to do with isoboxer (im extremly new and only on a 7 day trial at the moment), if i can run this perfect and get to know it i intend to purchase the sub for 2 years as i play most of the games you support