edit: I found the problem... as often, it was the user. :) I had max # of tasks set to 1 as I only wanted one LLR task to run. Unfortunately that included GPU tasks. A bit strange that BOINC still requests tasks, but I assume it doesn't know the settings locally.
Yes, it reacts to all other changes. Also the log says that BOINC is now trying to get nvidia GPU tasks, but the server doesn't send any.
I also enabled AP-27 now, still no new tasks.
Is it possible to see why the server won't send any work?
1281979 * 2^485014 + 1 is prime ... no further hits up to: n = 4,400,000