My clients are connected with wireless cards and various APs to the AP which is MikroTik.
And I set every connected mac address in access table to 4M AP Tx Limit.
But them I noticed that ping times are instable is AP tx limit feature tha should be used only in combination with MT clients or with any wireless equipment.
I disabled AP Tx Limit to check this problem. But now Im not shure is it affecting network performance or not .