Stuttering, Small freezes and framerate Issues

[Woopzilla]

Just to give some more info on the new suggested settings (48, 6, 32768): Those values still work for fixing my game.

Just to show how bad my issues were I made a longer video. Can anyone who says that the patch doesn't fix anything confirm that this is the type of stutter you experience and in roughly those locations?

Youtube playback seems to be bad in Firefox lately after recent updates. Best to watch in Chrome or IE to properly see all the stutters.

Unpatched game: https://www.youtube.com/watch?v=nZMZD4NFG_M
Huge stutters and constant framedrops throughout the level.
Note: The huge freeze at 0:09 is not an exception. At first I thought my computer was really just doing something in the background, but no, that freeze happens 100% of the time every time. Can someone confirm this one?

Patched game (all files from aampf_stutter4.zip + MaxChannels="48" StreamBuffers="6" StreamBufferSize="32768" + New profile + Started a New Game): https://www.youtube.com/watch?v=n0R7iD4QuAU
No obvious lag or stutter at all.
Note: The huge freeze at the very beginning is also completely eliminated.

Different quality settings don't change my results. I can run max settings without problems after the patch.

Intel i5 750
8GB DDR3 1333Mhz Corsair
ATi HD 5850
Onboard Audio VIA HD (Asus Motherboard P7P55D-LE
Hitachi Deskstar 7200rpm Sata II
Windows 7 64-bit Pro