Change the priority of your application

   Give it the highest priority:

  SetPriorityClass(GetCurrentProcess, REALTIME_PRIORITY_CLASS);

  SetThreadPriority(GetCurrentThread, THREAD_PRIORITY_TIME_CRITICAL);

   Restore the normal priority:

  SetPriorityClass(GetCurrentProcess, NORMAL_PRIORITY_CLASS);

  SetThreadPriority(GetCurrentThread, THREAD_PRIORITY_NORMAL);