One client breaks it all - wireless problem

Hi guys,

I have a problem with one of my clients. When I connect him, the Tx/Rx Rate and Tx/Rx CCQ of other clients are getting much worse and the pings of other clients goes to hell.
When he is connected, he has this values at my Mikrotik:
Tx/Rx : 1Mbps-SP/54Mbps , Tx/Rx CCQ 20-30percent-> terrible, I know.
Here are the client registration data (marked):
mikrotik.jpg
At this moment, when I look at his Router-Client WA2204, I see this (HYPERION1):
client.jpg
When I disconnect him at his AP, everything is OK and the signal of other clients is from -60 to -70.

The strange thing is, that this only happens after sunset or when the weather is bad (snowing, raining…etc.). During the day is everything ok, he even goes 54Mbit/48Mbit and works best in the WLAN, other clients works as well.

I do not know what to do with this and where to look for possible problems. Is his AP damaged and transmits very weak signal?
Have you ever come to this problem? What is the possible issue?

My MikroTik RouterOS : V2.9
Client AP : WA2204A

Thanks for any reply

Tom

Sounds like he’s just barely shooting through some trees or something, something that is made worse by moisture in the air. I have a few like that. They’re kind of a pain to get stable.

Perfect link in good weather, no link in bad, look for tree tops in the way of the shot.