UD and Seti work together perfectly! They both use 50% cpu power. I think DPAD is no different.
But, even when UD runs at 50%, your system scores will not (or only a little) drop. And because
the points are given to cpu time, when a wu takes more time, you'll receive more points! So in the
end you'll get the same amount of points / day with or without running DPAD...
Good luck! 🙂