I've read about a feature called Airtime Fairness on: https://routerguide.net/airtime-fairness-on-or-off/
A quick google search shows that DD-WRT has this feature implemented, but I cannot find anything on airtime fairness on openwrt. So my question is: Does openwrt support this feature? And if so, how do I enable it? Or is it enabled by default?

Possbily of interest

I posted the following on the routerguide.net site re: Airtime Fairness:

There is a lot of good research going on in the "Make Wi-Fi Fast" project. See https://www.bufferbloat.net/projects/ma … fast/wiki/

For concrete results, see June 2016 paper: "Fixing the WiFi Performance Anomaly" at https://blog.tohojo.dk/2016/06/fixing-t … ath9k.html

Read the archives of the "Make-wifi-fast" mailing list at: https://lists.bufferbloat.net/listinfo/make-wifi-fast

If you want to use bleeding edge LEDE code (spinoff of OpenWrt) to see if your Wi-Fi is faster than mine, try: https://kau.toke.dk/lede/airtime-fairne … x/generic/

Get your lag down to milliseconds no matter how you load your network.

Thank you very much for your detailed response. Those bleeding edge LEDE builds look really interesting to me, especially after having seen the stellar results in the blog post. However, in the tests in the blog posts multiple routers were used. One as the AP, while the other ones as clients. Was the network performance and latency improved due to the AP's firmware? Or did the clients also require this special firmware? In other words, will this also work in a regular network with regular clients such as phones and computers?

This should improve things even if only implemented at the AP. It does not require changed drivers in the stations. Not that improving the stations' drivers would not be a good idea...

Best Regards
        M.