128Gamma allows you to enable or disable its Windows NT & 2000 PriorityBoost.
ProcessPriorityBoost
ProcessBoost enables Windows NT & 2K to temporarily boost the priority of the entire process.
When a thread is running in one of the dynamic priority classes, Windows NT temporarily boosts the process's priority when it is taken out of a wait state. This setting affects all existing threads and any threads subsequently created by the process.
ThreadPriorityBoost
ThreadBoost enables Windows NT & 2K to temporarily boost the priority of a single thread.
When a thread is running in one of the dynamic priority classes, Windows NT temporarily boosts the thread’s priority when it is taken out of a wait state.