Hi was getting momentary video stutter, what is causing this is non MS apps and services that start with Windows
I went and entered MSCONFIG into run ( windows key +R)
Click the services tab
Click hide Microsoft services, then click disable all services
HAS TO BE IN MSCONFIG AND NOT THE TASK MANAGER SERVICES TAB, in the Task Manager services tab you can lock your self out of your system
Then went to the TASK MANAGER and the start up tab and disabled all
then rebooted, what the main culprit was an app that starts up for my DPS power supply that shows me the voltages, power In and out, temp ...etc.
you may want to just enjoy playing your games for awhile with all the non ms services off...don't forget...I tried to run adobe CS3 and it said I needed to reinstall it...until I turned the FLEX NET Licensing service back on.
another way to do all the above to is use AUTORUNS from Microsoft.
I also went into my video card and turned the frame rate from 60 to 80, increased the fan speed at certain times, increased the freq to the RAM, do all this in steps with reboots.