I FOUND THE PROBLEM!
So what I didn’t realize is that in order to disable event tick from the beginning there’s a setting option in Class Defaults to do that, it’s called Start with Tick Enabled. Instead of unchecking that box, I used the function Set Actor Tick Enabled to disable Tick, but if in the Class Defaults, Start Tick is Enabled, the function does nothing. And so I was running Tick which was setting the World Location of the Capsule where the mesh was, that is why it seemed like it was fighting to be positioned on top of the floor.
Thank you Everynone for trying to help me, although it was indeed my dumb mistake from the beginning. I will keep this post if it can help someone with the same problem, even though it is very specific.