IDT HD Audio stuttering 3d apps/games/tf2 - Windows 7 x64 - Pavilion dv7-4113tx

As per the rules I need to state:
I am a HP employee, my views/opinions/etc are my own and do not represent those of HP.
This is cross-posted from freezes/lockups.
I would file some sort of bug report - but I wouldn't know where to start, I don't work in an area that has anything to do with manufacturing HP products; and this is my free time now and I don't have intranet access .
I recently picked up a HP Pavilion dv7-4113tx Entertainment Notebook PC [ XV780PA ] for my personal use and overall it's been pretty good. It comes with windows 7 Home Premium x64 bit.
there is however an issue that I must bring up in regard to gaming, or i would assume any intensive 3d application, most notably Valve games, my test of choice is Team Fortress 2.
The game will work fine in native resolution - I get around 100-120fps but about every 30 seconds - 2 minutes, there is a audio/video stutter (by stutter, it will repeat the last .5 seconds of audio about 3-4 times in a loop while the screen will freeze on where the first audio stutter started), which will cause the game to 'freeze' for approximately 2 seconds and then continue where you left off.
Team fortress 2 is an incredibly time critical multiplayer online game, and this delay essentially means my e-death on multiple occasions.
I initially thought it was the graphics card, or the drivers - I upgraded the drivers to the latest on the ATI site, that increased my fps, but the stuttering was still there. After searching around on the internet a bit, i found a suggestion to disable the audio driver (device manager lists it as - IDT High Definition Audio CODEC) as a test - so I did so.
The game purrs like a kitten - absolutely no stuttering. my score went up immediately
So, my next step was to try and get some Updated Drivers for the IDT Audio device (note, i cannot find a model name anywhere in the hp specs - or on the internet really) - I found out IDT themselves cannot release drivers, that these can only be obtained through OEMs.
which brings me to here.
now - the closest I have found to the drivers I required are here: IDT High-Definition (HD) Audio Driver for Microsoft Windows 7
Note: - it says on the page that they are 32 bit drivers - but I've found they work with the 64 bit version of windows.
these worked a little better - it fixed another annoying issue - the fact if you use the volume controls in a fullscreen application that it will switch back to the desktop to display the on screen slider bar of the volume going down (which was arguably redundant as windows 7 displays the speaker volume in the bottom right hand corner) - and it just turns the audio down as intended.
however - the stuttering is still very noticeably present .
I then tried to use the HP Support assistant to run automated diagnostics and troubleshoot... which then downloaded the old drivers that gave me that fullscreen volume control issue back again - so i assume the original drivers.
So I installed the other drivers again.
My next test will be to use an external USB or firewire soundcard to see if this will allow me have games with sound.
Can an appropriate agent at HP please address this concern and notify when this bug will be fixed - IDT says they work with OEM's to fix issues regularly on the IDT link above.
I believe this is such an issue that will likely require a bug fix.

Hi ozDerek,
Thank you for visiting the HP Support Forums. Since this is a duplicate post I'm going to lock this one, please check your other post here for replies:
IDT HD Audio stuttering 3d apps/games/tf2 - Windows 7 x64
Thanks!
Wendy M - HP Support Forums Moderator
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IDT HD Audio stuttering 3d apps/games/tf2 - Windows 7 x64 - Pavilion dv7-4113tx

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