QUOTE(mmohdnor @ Nov 16 2017, 12:19 AM)
Hi guys,
Not sure if this is related. but looks like it. Just got upgraded from 30mbps to 50mbps too recently.
I was using TL-WR841HP V1 before this. Wanted to try AC wifi for my new 50mbps line so I bought the Archer C60 V2 AC1350 and a AC600 wifi receiver Archer T2U.
But after a few days testing, seems like my C60 can't give 40Mbps+ over wifi on both 2.4GHz or 5GHz. Most of the time it hovers around 30Mbps or so.
With LAN cable, I can get at least 40-45Mbps on both my routers C60 & WR841HP. But not on Wifi, it seems stuck / capped around 30mbps, where mostly I get just 25-28Mbps on wifi.
Also tested with my other devices with wifi AC smartphones in the house. (A 2-storey terrace)
Some suggested to disable QoS, but i can't. My router won't work if I do not enable Unifi IPTV.
How to disable the QoS? The checkbox is greyed out if I choose Unifi IPTV enable for C50 V2 firmware. It says QoS and IPTV can't be enabled together at the same time.
Should I use custom settings for IPTV and then enable the QoS? What are the numbers to use for IPTV?
In the end, just using the C60 as repeater to my old WR841HP ..*sigh*

Did you try using another router? Anyway, I think QOS has been disabled by default, so that might not be the problem. If you can get the full speed or close to the full speed with another router, the C60 might be the problem.
QUOTE(arrsoo @ Nov 16 2017, 11:49 AM)
did you also disable ipv6 in your router? perhaps if you can be more specific on where your placement of router is and how far away from your router when you do the testing, sifus here might be able to help
I don’t think it have anything to do with the placement of the router or IPV6 settings. Might be a firmware issue or his router is not capable of handling that many devices, with result in lower thoroughput.