I think I can at least reconstruct what I did yesterday. I played the move order above and changed the level while Resurrection was thinking about cxd4 to 3s/move (it was at the usual 15s/move). This led to a thinking time of 1:17, I could reproduce it a few seconds ago.

However, sometimes the thinking time is quite long anyway. See also one of the games I played against the Tasc on the 30s/move level, where it needed more than 4 minutes for the first move after it made its last bookmove.

Well, on the other hand this is admittedly not a big issue given the respective levels of 15 and 30s/move...

Best,
Martin