IIRC the 3 point measurement is only for standing wave correction. You can't run the full auto mode - you have to go in and do the standing wave 3 point measurement separately.

For my room and to my ears the standing wave correction is the most useful correction the MCACC does. I always defeat the EQ settings MCACC wants to apply - just my personal preference.

Dan
On-Wall M5HP LCR, QS8 & EP500 in 7.1