Not in reference to the 86u but this is for the AC5300. I made my friend purchase the AC5300 and in about 2 weeks his 2.4 g stopped working and the 5g constantly disconnected. Nothing helped, factory reset, reflash, recovery, nothing. They warrantied it out and the second unit stopped working with the 2.4 GHz in two weeks again. The 5 GHz works just fine. I wonder why are there so many failure rates with these routers.
My AC5300, on the other hand, is rock solid. 2.4, 5 GHz all of it.
My AC5300, on the other hand, is rock solid. 2.4, 5 GHz all of it.