Use DFS channels. I have a friend who is a streamer and lives in an urban setting... almost 100 5GHz APs are visible in a scan in her apartment. She was having constant issues that we tracked down to huge latency spikes due to the congestion for the non-DFS channels. It turns out that her cable company's wifi AP / cable-modems do not support DFS.

I got her a wifi AP that supports DFS, and she has not had any issues..

Note that I initially got her a fancy Netgear which claimed to support DFS, but we could never get it to work. I spent a week going in circles with their support and eventually returned it.

I eventually just gave her my several year old Atheros-based TP-Link router running DD-WRT. It was able to use DFS channels, and she has a channel to herself now.