Hi @Jujaswe, the drawcalls reported in level editor viewport is not always accurate, you can check more accurate mesh drawcall numbers by click “Play - Standalone Game”, then press “`” key to invoke console window, type in “stat scenerendering” to view rendering stats.
Here’s a test scene with 82 cylinders:
When placing cylinders as normal static mesh actors: http://i.imgur.com/DoG4pSc.jpg
When placing cylinders as HISM instances: http://i.imgur.com/JP5u7AU.jpg
