OpenWrt 19.07 is the latest stable release, and 18.06 is being legacy. I use 18.06 great except sometime WiFi is not available, very few times.
My router is Linksys WRT 1900AC v2.
According official document, I could upgrade 18.06 to 19.07, document said for many cases, I backed up configurations and flash the
sysupgrade image, everyting works fine, and after router started up, my networking still recovered without my custom softwares.
I installed Shadowsocks stack (shadowsocks, chinadns, dns-forwarder), and luci apps, but their luci apps crashed, missing
cbi.lua, it's a known issue, just install
I didn't setup WiFi country code properly before, I used
US, every country's WiFi available frequency is different, and you should set it where your router in, so I should set it
CN as I'm living in China now.
I modified 5G WiFi channel to
auto, maybe it's not a good choice, as
auto is just a shorthand for first available channel, not a dynamic channel? I'm not sure, so I just pick up one available channel in China, current I use
149, and width
I dropped support for legacy 802.11b rates as I still closed 2.4GHz WiFi.
I have no knowledge to tuning WiFi distance optimization, so just level blank.
After I upgrade router, I tested performance via
iperf3, I setup
iperf3 server on NAS and client on mobile phone, on MacBookPro, the results:
no additional increments...