It would be really useful if the merge actor tool was made available in UEFN so that we can reduce draw calls. Currently the only way to achieve a similar effect is by adding all of your meshes to the foliage tool.
@ItzSHFT Thank you for your feedback. While I cannot guarantee a response, I can confirm that this has been forwarded to the appropriate team.
@ItzSHFT Hey, I know this is a super old post, and I unfortunately don’t have an answer. But I am a new UEFN user who was looking to do this same thing. Did you end up finding an alternative, or would you be able to help me understand how adding all meshes to the foliage tool is done/works? I would really appreciate it <3
Hello, Welcome to the Forums.
You can merge meshes in UEFN with the built-in Modeling mode. (Click ‘Selection Mode’ dropdown in the upper left of the editor)
A huge caveat being that you’re only able to merge the meshes you’ve created and/or imported.
Using the foliage tool seems inadvisable, under the hood foliage makes things into ‘Instanced Static Meshes’, and I think copies of the same mesh are already automatically batched/instanced. (Back in 4.22?)
I’m curious to know what you’re creating that already needs draw-call optimization. You’re seeing poor performance/framerates?
1 Like
Hi! Thanks for the welcome 
I’ve been using the modeling mode, I have been finding it to maybe be a bit limited compared to some other modeling software ive used, understandably.
A huge caveat being that you’re only able to merge the meshes you’ve created and/or imported.
I have since realized this, which was originally what I was hoping to be able to do. Instead what I have been working on, and kind of struggling with lol, is making a very low poly version of the Steel Bridge Yellow prefab for the background of an already really busy island. I come from an architectural modeling background so I am wishing I had some of the tools I have in Rhino for example 
and I would’ve been done with it already