I have been testing both versions of Server 2008 and 2008 R2, and each time I installed Hyper-V, the computer would BSOD on reboot, pointing to system error 116 referencing ‘nvlddmkm.dll’.
If I installed Hyper-V and used the MS WDM video driver, no problems, but as soon as I upgraded to the nVidia driver for my 8600GT embedded video, blue screen.
Finally I purchased an ATI Radeo HD 4650 card from CompUSA for $79, and no further problems with Hyper-V have occurred.
Now, if I could just get sound emulation to work in the VM without having to use RDP…

Arris: Thanks for your comment! This increases performance drastically indeed. By default this option should be enabled for all fixed disks.

If you are starting with 2008sp1 – what order do you think the workstation customizations be made? Off hand, I started with group policy editor and customized password, shutdown tracker and various other matters. (autoplay off for me)

But what I want to know, should desktop features come before or after sp2? What about third party drivers?

Second question? What running the security config policy to to shutdown unneeded services – go or blow? Before or after sp2 or desktop features?

Arris: Thanks for your comment; I added a note to the Installing Hyper-V page.

The operations that trigger this most consistently are starting up any DirectShow-based program (Windows Media Player, MPC-HC), or starting up the RDP client.

I tried disabling DEP for all software except Windows services, reduced the multimedia throttling factor to 20% but this still happens. I’m going to disable Hyper-V and see if this gets resolved, I’ll post my findings afterwards. Oddly enough, 3D performance is on par with my expectations (well, as much as can be expected from a crappy 8500GT).

Arris: Thanks for your feedback! I added this solution to the Enable Sound Acceleration post.

Arris: Looks normal. If you look at the cputime of ‘System Idle Process’ in comparison to the other processes you see that your pc is idle most of the time. It might help to clean up the AutoStart programs a bit like jusched.exe, realsched.exe, apdproxy.exe and maybe some other processes you don’t need using the Sysinternals Autoruns tool. To compare, here you have my tasklist /v output.

Arris: The System Idle Process represents the capacity your processor has left to do things, so ignore that one. However if you think you PC is slower as normal, execute the following commands in Start -> Run -> cmd and copy the contents of the tasklist.txt file to for example http://freetexthost.com/. (don’t worry about the lay-out of your text at that site, because when you view the source of the html all text is fine.)

Arris: You can open the Task Manager by typing taskmgr in Start -> Run. If you now go to the Processes tab and sort at the CPU column, you see which process(es) are exhausting your CPU.

Arris: If you open your Task Manager, what process uses all 4 of the cores?

Tell the multimedia class schdiuler that it’s OK to thrrottle background apps to let it play!

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\SystemResponsiveness

That value is a percentage to dedicate to background tasks – set it to something lower than 100% (default).

http://msdn.microsoft.com/en-us/library/ms684247(VS.85).aspx

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\PriorityControl]
“Win32PrioritySeparation”=dword:00000026