Problem with connecting 2 rb 112

I need to connect two RB 112 thorugh wlan and i have a small problem with it. One of them is set as Bridge, and other as Station. They connect almost without any problems. When I try to connect to the the one which is connected thorugh WLAN I’ve got terrible slow connection, that i get disconnected almost instantly.

The interesting thing is that the Internet on clients which are connected to the second RB works fine with full speed.