Edit default landscape realtime without using voxels

Hi there, I want to make small changes to my landscape in realtime. Is it possible to make small changes like grenade blast impacts? , nothing crazy. A small crater is what I need. I want my landscape to update navmesha and collisions accordingly after the changes and it will be for a multiplayer game. Is it even possible in engine? without using voxel plugin. I am avoiding that because of performance issues, and I only need smaller landscape changes so I am looking for a fairly simple and cost affective solution. Thanks

There are some pretty good decals?

Brother, I think you got it wrong, These works in editor, I want to use these in game. I want to make changes in my landscape runtime.

Yes, so you can spawn them on the landscape? Is that no good?

But they wont deform my landscape suring gameplay.

You did say 'small changes ’

It depends how much deformation you’re looking for.

If you just want to blast holes here and there, this is fine.

If you want to change the shape of the land, you’ll need a plugin I think.