Windows 7 - application base priority auto changes

Hi, I have noticed that when I run certain applications, Windows 7 decides to auto-change the base priority to a lower value. This occurs even when I still have plenty of available memory and cpu to give. This always causes the application to run laggy. So manually setting base priority does nothing. Windows 7 disregards my settings. Is there a reason for this?

The behaviour I prefer is that when a user sets a base priority of NORMAL, the application will have its minimum priority set to NORMAL and not auto change it to a lower value. I mean, that's what *BASE* priority means - right? The way its behaving now, the column should be called 'variable priority'.

Is there some setting/app I can use to force an application to maintain the base priority I specify?

I never had issues like this when I had XP 32bit installed on this same laptop, even when 3 or more instances of the same app was installed. It ran smooth.

I have tried:

1. running application via command prompt using: start /<priority> <program>
2. used Prio app: Prio - Priority Saver

But nothing works

I am running Windows 7 Ultimate (build 7601) 64-bit with 4 GB RAM.

Thanks for any help.

Windows 7 does not auto-change applications priority. Applications can change their own or another application, but Windows 7 itself does no such thing.