played an hour in my XP 64-bit for a change ..i must say ... NFS and XP hav some connection ... it happened in prostreet as well ... NO LAGS in XP ... and i could really feel those Most Wanted days coming back ... playing at Max 6x AA ... and now iam getting a hang of it ... as u get more faster cars and story goes on ... iam sure u can pass the initial uneasy feeling of below-par ness ... it happened to me in some other games like stalker,etc ... but all of u must try it for some more time before forming judgement ... its NOT that bad ... but most definatly ..not a breakthrough in racing games like GRID was.