Since version 1.90 all commands related to addWaypoint not working as intended after initial 2-15 iterations. Aditional waypoints are not generated or AI stopping movement before reaching current waypoint or stopping at waypoint.
It is not related to obstacles. It is happening in open field as well.
Tested on missions that used to work well (before update 1.90) - problem exist.
Tested on developement versions 1.9+ - problem exist.
Tested with mods altering AI behaviour as well as on vanila Arma 3 with no mods - problem exists in both cases.
After altered movement to _myUnit moveTo getPos _placeToGo; - problem still exist yet is much more difficult to spot.
I was trying to bypass this problem and after 2 weeks of work I found no solution.