Why doesnt manual ACK/Distance work?

Over the years. Ive never been able to get this to work? Is it known not to?

I want to set on the AP a manual ACK/Distance.
It doesnt matter if I set it to 8 kilometers or 80 kilometers, none of the connected clients will pass data or do so only for a few seconds.

This goes all the way back to the 3.x days all the way to the 6.0 RCs.

?