In voice every millisecond counts.
That is the main reason why I dislike DFS channels, because they introduce significant delay, which is lost time.
But how bad can the lost time really be?
And why do you care if you’re not running voice?
Well folks, flick the lights on, pull the cover close and read on… it gets scary (yes, scarier than Ghost Frames™).
Continue reading: 
https://mac-wifi.com/why-i-dislike-dfs-channels-and-you-might-too/
Continue reading:
https://mac-wifi.com/why-i-dislike-dfs-channels-and-you-might-too/