On hAP ac2 is similar problem. Unexpected reboots every 2h to 48h. I sent description of problem to Mikrotik support. I have the same issue - one of my hAP ac2 is rebooting from time to time (looks like it usually reboots within 24 hours and then works properly till I reboot it manually - however t...

On hAP ac2 is similar problem. Unexpected reboots every 2h to 48h. I sent description of problem to Mikrotik support.

Sorry, I can't. I downgraded soft to 6.42.7

There is a problem with 6.43RC66 on hAP AC2. My router reboot itself with info in log file: system,error,critical System rebooted because of kernel failure every half hour to 6 hours.