Wireless packet loss 25% !!!

Good day, with Mikrotik we work for more than 15 years and now we have huge problems with the new device: RB922UAGS-5HPacD
Ap are in an ungrounded environment and have a packet loss on a WiFi subscriber of about 15-30%. This error rate has all APs.
turn on FlowControl did not help, tested with the latest firmware: 6.43.8 We can give you access to our site for testing!
AP_141.jpg

Wireless can’t have packet loss if link is stable. Check the log, if the client is simply not disconnecting because of poor signal.

Use nv2