AI pathing - AI walks the same path

I have an AI (zombie) spawning system that works well. It will spawn AI at random locations and the AI will immediately begin to move to the player. However, as they get closer to the player they all funnel down the exact same path thus creating a line of zombies, instead of a crowd. Any suggestions on how to change that?

The movement is simple BP logic, so nothing fancy.

Thanks for the help!

ue4 detour crowd ai controller