Playing NFS:Most Wanted under 64-bit Vi$ta

The game is stuttering, when moving from one area into another. I don't
know whether it's the RAM or the disk i/o. Using Radeon 4850 on a X2
3800+, with 6G DDR2-800 RAM. No stuttering under 32-bit XP.

--
@~@ Might, Courage, Vision, SINCERITY.
/ v \ Simplicity is Beauty! May the Force and Farce be with you!
/( _ )\ (Xubuntu 8.04) Linux 2.6.25.10
^ ^ 21:49:01 up 1:06 0 users load average: 1.00 1.01 1.00
? ? (CSSA):
http://www.swd.gov.hk/tc/index/site_pubsvc/page_socsecu/sub_addressesa/