I'm using 802.11ac and see no need for higher speeds.
Higher speeds automatically means less latency and that does matter, especially if you are into stuff like games where every millisecond matters.
There’s so much interference that the package dropout rate is around 40% at 2.4GHz usually.
So having the 5-6 AP is not the problem, then shouting at max power is the problem. Especially “gaming” routers tend to do this.