i have intermittent problems working with wi-fi.After some time have to disable and re-enable the module wi-fi on the ipad (it was the same for versions 5.12-5.19, then I switched to v6 beta). The problems were only on ipad1! (ipad3/macbook/iphone) worked fine.
Only on firmware v6rc9 problems did not become on all devices. After upgrading to v6rc11 problem started again!
Where can I download the firmware v6rc9 to check? I updated through the system / packages / upgrade and therefore no file
http://download2.mikrotik.com/routeros/6.0rc9/routeros-mipsbe-6.0rc9.npk
Try this, but better is write your problem to support@mikrotik.com
They can fix it in next RC
Thanks! Try today and write result