update to my AC86U issue, sent back to ASUS for RMA within 2 days finish repair and mail back to me (not convince that they actually fix the issue because no reason is given either they repair the router or giving me a replacement unit), the good news is that Amazon is sending me a replacement unit free of charge (no question ask even after 2 months) and I will have 1 month time to return back the old router. Never knew amazon has such excellent service, now I get to have 2 unit to test out for a month before decide to return either one

This post has been edited by wengjoe: Oct 3 2018, 04:27 AM

RT-86U user here

out of sudden the 2.4G 40Mhz channel is getting very unstable and very slow (speed testing show less then 10mb)

but when i change back to 20Mhz, everything is fine. No issue with LAN and 5GHz

anyone encounter such issue ?

I was using 40Mhz for quite some time and there wasn't any issue, I suspect it could be a hardware issue.

anyway, Amazon sent me a brand new unit as a replacement, gonna test out both unit to see is it a hardware issue.

btw, I don't have such issue when using my old router Asus RT-14UHP

This post has been edited by wengjoe: Dec 24 2018, 09:52 AM