Sorry if the question got people ask before,

Is there anyway to connect 2 wifi router into a Unifi BTU ? Currently using D-Link DIR-850L provide by TM which is unstable in wifi connection. The connection is inconsistent and easily disconnected even though i am infront of the wifi router. Previously im using TP-LINK ac1200 D5 to connect my streamyx and the wifi is great.
So my question is there any idea to use two wifi router, one is solely for HYppTv (DIR-850L)and another is wifi connection such as gadgets , ip cam etc (TP-LINK AC1200) ? And will it affect the speed as well? Please help, i need your guys advice.

Thanks for the reply. But does this work the other way round? Mean that TPlink as my main from BTU. then the DIR-850L from my TPlink. And i will off the DIR-850 wifi ( only use for hyptv purpose). The TPlink will become my main access for internet connection. I notice that if my tplink become the sub from DIR-850L, the ping will become higher. Or can i just replace the DIR-850 to my tplink directly, but im not sure the hypptv will work or not. Sorry for the noob question.

hey sifu, i use my old router as my wireless router (AP) connect to the DIR-850 LAN port. However i notice the ping will become higher 20-40ms when i connect to the second AP. If i connect to the main AP , my ping will below 10ms. Is it normal for the second AP?

sifu, can teach me how to troubleshooting ?