smooth as silk on my desktop and runs choppy on my laptop.
didnt have 1920x1080 so i picked 1920x1200 i should gain a better score on 1080p.

Main PC:
i7 860 @3.4GHZ
8GB dual channel
two 480GTX 1.5GB SLI




Laptop:
i7 2670QM 2.20GHZ turboboost
8GB dual channel
geforce 550m GT 2GB