Hi! Three questions for anyone using OpenWrt + Archer c6 v3.2:
(1) How stable is the Wi-Fi connection?
(2) How is the Wi-Fi performance (local network, iperf3, not internet/WAN/NAT)
(3) Any major issue with OpenWRT on Archer c6 3.2 (considering that it will be used as access point without router/NAT)?
Some additional context:
I am asking these because I have 3 Archer C7 (v4) being used as access points, but WiFi download performance on Acher C7 with OpenWRT is capped about ~340Mbps (while with stock firmware it reaches easily ~600Mbps on Wifi, tested with iperf3 on the local network).
I tried everything on the C7 I could find (ct and non-ct drivers, compiled custom version with minimal packages to be used as AP, etc), but nothing worked. While with Wi-Fi upload on C7 (with OpenWRT) I can get about ~550Mbps (close to stock firmware), the Wi-Fi download speed (iperf3 -R on the client) is capped about ~340Mbps (and it is no user error, iperf3 server connected directly via Gibabit Ethernet, and I tried many clients - windows, Linux, android, iOS, all very close to the AP and the results are all the same).
My conclusion (not scientific) is that the issue with C7 seems to be an issue with Wi-Fi performance being limited by its CPU (and C7 has a single core CPU@~750Mhz). There is something that is CPU bound when the C7+OpenWRT is sending data to a Wi-Fi client (download on the client, tested with iperf3 -R).
So I was looking for a cheap dual-core AC router with OpenWrt support and I discovered that Archer C6 v3.2 is dual-core and I am willing to try one to see if the OpenWRT performance on C6 v3.2 is better that C7.