With the nRF51, it was not possible to run a high frequency realtime task due to the SoftDevice running with the highest interrupt priority, is this different for the nRF52? I couldn't find anything definite in the docs so far, did this change?
(Specifically I'm looking to run a pulse generator interrupt in the 50kHz region, for stepper motor control. It's a showstopper against the nRF51, with the TI CC2640 being the alternative.)