Possible graphics stuttering fix ( worked for me) would like soem feedback if it fixes anyone elses problems I have found a tweak to the ntfs file sytem that happened to fix my stuttering issue.. was so bad I could barely play (core 2 duo e7200 OC'd 4.03 8GB of ram 8800 GT 512MB)
This fixed it for me Type in the following command to increase the cache setting:
fsutil behavior set memoryusage 2
Please note that these OS changes on a "lower level" may seem to solve certain problems, but may also have side effects that are not documented or well-known. A lot of the Windows tweaking tips may be dangerous or have no effect at all. I do believe that changing this may solve problems, but a good defrag may also fix read/write operations

For instance, concerning the fsutil memoryusage command, read this:
http://smallvoid.com/article/winnt-ntfs-memory.htmlAnd note on that page: Note this setting is mainly for server systems with a high end disk system that consists of multiple disks, which is bombarded with file operations (Like a Web-Server).
Note when increasing the memory usage, then it will use more of both paged- and non-paged-memory. Therefore make sure that existing services/drivers are not already using the available paged and non-paged memory, as these services might perform worse with less memory available.
I am always cautious when reading tweaking tips, and google for technical explanations, preferably from Microsoft's own website. I always start from the fact that Windows is at its best as it was shipped. I would like to politely urge our players to act and think similarly