The only 'shutter' or rather stuttering I have encountered is the X-Ray room in the Medical area where the zombies are walking and you can see their skeletons through the X-Ray. I personally think this has something to do with the Catalyst 5.3 Drivers, since I have not experienced anything bordering on stuttering or 'shuttering' anywhere else to be truthful – ATI 850XT is such a wonderful card btw. The beta Audigy 2 ZS drivers seem fine, though I wish Activision released the patch so we could actually test them out. Btw anyone else notice that Creative drivers seem to cause DCOM errors? There is a work around for that (since all creative Audigy 2 drivers from my point of view seemed to have this issue from the get go) where you simply go into Device Manager and view all hidden devices – looking under Non Plug and Play driver and change PfModNt properties so it startup type is System and then change PFDetNT startup to on Demand and then restart the system and no more DCOM errors. I just wonder when Creative is ever going to fix that.