i have this problem, sory icant write smart english, perhaps this screenshoot explain my problem,
my main problem is disconnected extensive data loss,
x86 mikrotik ----> groove ))) (((( client station

you have some advanced and HT tab settings different from default

why you have changed it??

are you using omnidirectional antenna??

please check the ccq of the disconnecting clients enabling the ccq column on registration table

you have some advanced and HT tab settings different from default

why you have changed it??

are you using omnidirectional antenna??

please check the ccq of the disconnecting clients enabling the ccq column on registration table

what is the default setting for that tab?

Enable WMM support.
Go to DHCP table and increase lease time, 4-5 hours.

Hello.
I have the same issue.
Did you find a fix?