How to make NPCs not collide with each other? (Unsolved)

As of now, I'm making a game where NPC's will have to only take one path, and I need for them to be able to walk through each other. I have already solved the following issues --

• I put a BodyGyro and BodyPosition to keep them in place, while the floor is CanCollide = false.
• All of the NPC's body parts are CanCollide = false

An issue came up to where whenever the NPC moved (for instance, with manually setting the MoveTo property of Humanoid), the Torso and Head would become CanCollide = true. To solve this, I put the following script into the head (it's inefficient, but it was for the sake of testing) --

while true do
    script.Parent.CanCollide = false
    script.Parent.Parent.Torso.CanCollide = false
    wait()
end

This did work, making the torso and head always stay CanCollide = false. However, it still didn't work. Whenever I make an NPC MoveTo a position behind the other (which was a complete duplicate), it will still get caught on the other NPC about 95% of the time.

Whenever the NPC is moving, I can see the CanCollide property flash extremely quickly (as I would expect). Does this mean a shorter wait time would rectify the situation?

Or, is there another way to solve this issue (or another way to deal with NPC collision)?

Thanks for reading, and I hope to find out a bit more on this strange issue.