bug 1312383 - set scheduled task process priority to realtime
bug 1312383 - set scheduled task process priority to realtime

not sure it will help, but the current scheduled task runs its process with priority 7 (below normal) while priority 0 (real time) is the highest, 10 (idle) is the lowest.
https://msdn.microsoft.com/en-us/library/windows/desktop/aa383512(v=vs.85).aspx
petemoore/generic-worker,petemoore/generic-worker