Help with MGS:Twin Snakes

[Cabius]

I see tons of videos all over youtube of people running MGS:Twin Snakes perfectly with no lag, skipping, or crashing. They do not post their settings though. I have been trying to get it to work perfectly on the latest version/revision to no avail. I have tried changing sound to lle, changing backend to Xaudio2, Limiting frames by the audio. Nothing is working, so I cam coming here for help. What else can I try? Does anyone else have it running perfectly? What version/revision and what settings? I am using the 64bit version as I am on Windows 7 64bit. I am runing an Intel i5 750 quad core at 2.6Ghz, 8GB of RAM and an AMD Radeon HD 6970.