CPU usage is at 100%. How to improve smooth operation of the C# program?

Hi,

I develop a hardware status monitoring application program which execute in the Windows background.

Our testing engineer is running the BurnInTest tool to occupy 100% of CPU resources in purpose, in order to test if the application program can run correctly.

I found that thread and Timer functionalities in the program are causing delays in response.

Is there any API available that allows the program to preempt CPU resources for execution?

Rick