TX/RX Rate Issues

Hello, I noticed a delay and a not very good voice quality. Usually I can hear well but the guests are having issues to hear me. What I noticed is that my ring is connected to the wifi and the Tx rate is very poor.Rx Rate: 72.2 MbpsTx Rate: 1.00 Mbpsping 500ms 1.00 Mbps as tx can be the reason for the quality issue. I tried another network and it's exactly the same, I also switched of other devices just to make sure they were not disturbing the ring. Take in consideration that I have a very food network infrastructure, it's ubiquiti. The other device are working very well and I have no issues at all, they are about 60.With my router I can see the wifi Experience and all the devices are in status "excellent", the only exception is the Intercom the is "Poor". The ping is 500ms and everything else is 1-2 ms.I know this is a very technical post but I really need your help!!!