My AC87 was working great. Then I turned on the 5ghz to use on my NVIDIA Shield because it said my connection was weak. I was instantly having trouble with my cell phone (Samsung Note 8) playing online games. So disabled the 5ghz band again but it's still not working right. I've rebooted it without it help. I'm thinking I might need to reset it. Should I update the firmware? I'm on Merlin 380.69