Simple Zombie AI

Dear reader,

I tried to make a simple zombie AI, having the pawn move to the player’s location at every tick, however, as soon as I spawn a horde of zombies (which i intend to do in my actual game), the collision gets messed up, and the player and the AI get thrown all over the map.
Here is a short video of the problem, I used the Mixamo Animation pack Adam as a “prototype zombie”, which i intend to change later.

My question is: How do I get the zombies to behave properly, while still moving along the shortest path to the player, and still moving in a horde?

I appreciate any help, preferably using blueprints, because my entire game, including weapon system, is made in blueprints.

I really hope someone can help.

Thanks in advance.

[video]https://youtu.be/cxEdjqnephA[/video]

my AI’s bp,try this, works fine for me.