Just a heads up guys,
any of you running ffdshow need to add vegas to list of programs it will not be used in, fixed a bit of stuttering for me
This issue has been around since Oblivion. Bethesda should have fixed it in Fallout 3 but they didn't to my knowledge. I use Media Player Classic x64 and have no problems with ffdshow though but I did back in the day with Oblivion and Fallout 3.