The settings "completion radius" will always affect only for the player waypoints, while this will not affect the AI units! The AI will simply ignore this setting.
Before, I saw that it worked fine in Arma3 (for both - player and ai)), but in one of the updates it was broken.
There can be no reason why a player can have a waypoint completion, and the AI will ignore this waypoint setting!
As a result, now the mission maker, cannot complete the necessary AI waypoints quickly (without additional scripting). This is a problem for many players who do not known the programming language.
@BIS Please correct this issue, as this creates an imbalance (between player/ai) and problems for creators of missions.