Why does Mikrotik RB2011UiAS-2HnD-IN throw out WI-FI clients?

Question

network hardware

Mikrotik RB2011UiAS-2HnD-IN throws out WI-FI clients. If more than 2 clients connect, it starts to throw out, and so on in a circle, circled in
red, everyone has such an error, we have about 30-40 clients, reset the settings, it did not help.

Answer 1

Is it possible to see the signal level when the client is cut off?
what encryption is used?
what if you change the power of wi-fi?
UPD: Googled a bit. on the Mikrotik forum they also described a similar problem, so there was a problem that the dhcp server had an ip-address issue time of 10 minutes, it says it increased to 24 hours and everything is ok, I think it's worth seeing how you are

Answer 2

here is what the logs show.

Answer 3

And if clients are given static ip (so that there is no link to possible problems with dhcp)? Those. not that this is a decision to take, but simply to check.
As an option, set the binding of mac to ip.