Tilemap - Removing a bunch of tiles in runtime is extremely slow

Hello. I'm trying to create a destroyable environment using the 2D tilemap feature. I have a very simple sceneario with a small grid of 4x4 white tiles with grid colliders.

Creating new tiles in runtime with Tilemap.SetTile(Vector3Int, Tile) is very fast, I can create tons of them per frame as shown in the image. But when it comes to removing tiles -using Tilemap.SetTile(Vector3Int, null)- it perfoms really bad. I can remove a tile or two in a frame whithout noticing a fps impact but if I try to remove an higher number of tiles the game freezes for a while in that frame.

Is there a more performant way of doing this?

I'm running Unity 2018.1 with Intel i5 3.2GHz, 14GiB RAM, and Nvidia 950 GTX.

Thank you and excuse me for my bad English.