Well, anytime you want to have more than 1 of the same interactable thing in the level, it should be a blueprint. Performance can only drop by by converting all of your meshes to actors. Actors can easily be instanced, I like to think of myself as someone who knows a lot about instances, and they are fantastic. I’m really not sure about culling with actors, but it should be doable. Why would you want to convert these to actors anyways?