I have done some testing lately and found if you enable NV2 on the RBwAPG-5HacD2HnD then it works, but only until you reboot the AP twice. It doesn't matter if NV2 is enabled on wlan1 or wlan2 if. After you reboot the AP, it is stuck in an endless boot loop.
This issue is thoroughly tested on current Beta, Stable, LTS and it´s consistent.
Have any of you come across this as well?
Mikrotik support have a look at SUP-61092.