If you run WinXP here is a small registry tweak that can possibly help while you wait for the compiled version of eqplaynice:
[HKEY_LOCAL_MACHINE \System \CurrentControlSet \Control \PriorityControl]
Win32PrioritySeparation = 36 (decimal)
Meaning:
Short Quantum + Quantum is fixed and won't change for the foreground process + No foreground boost/priority
I can run multiple clients under WinXP with this setting without the background ones lagging behind.
More info here under #13:
http://snakefoot.fateback.com/tweak/win ... ml#QUANTUM
This setting gets overwritten if you fiddle around with the "Optimize Performance for applications/background" settings in control panel. In that case you have to re-apply the above. The setting given by the tweak cannot be accomplished through any combination of settings in the graphical interface.