Mobs spinning during pathing
 

My NPC doesn't seem to look in the proper direction when he reaches a waypoint. Some waypoints he looks good, some waypoints he does like half a spin before continuing to move. I have already tried giving him proper headings at each waypoint, but that just made it worse. He patrols these waypoints back and forth with a delay of 0 between each waypoint, except for the first and last waypoint, where I've added a delay of 5 seconds. Here is a video showing the issue:
https://screencast-o-matic.com/watch/cql6qgURKh

This is my first time making my own grid and waypoints, so I'm guessing I did something wrong. Any advice is greatly appreciated. Thanks!

They spin to face north (511) at the WP if the heading is -1 (default). When you set headings did you reboot the zone?

I set each waypoint heading to face towards the next waypoint, so there should be no spinning to face in other directions, since no waypoints are set to -1 or 0 or anything default.

Rebooted the zone, rebooted the server, still happens.