I don't think APB has changed drastictly since RTW.  Still has problems with people on 32-bit OSs, dual core processors or using 4GB or less RAM.  The game is very processor/RAM heavy.  

If you do play, I have characters on Joker US east (Enf and Crim) and Obeya EU 1 (Enf only).  Obeya servers are in Germany I think.