I just saw this posted over at my normal stomping grounds at sim-outhouse, but I know questions about stutters have popped up here from time to time. Perhaps it will be useful?

http://www.sim-outhouse.com/sohforums/showthread.php/123294-FS2004-FSX-P3D-DXTFixerX-Utility-v2-3

I really know nothing worth mentioning about the topic or if it is applicable here, but I thought I would throw it out there just in case.