Hey! (Fellow dev, I'm working on Meeple Station)
I had a look at your demo, and this game looks great! I'm a huge fan of Factorio (like, 300 hours worth of gameplay sort of fan) and couldn't help but notice the inspiration. However, on the MacDemo I tested, I was struggling to push above 10 FPS the entire time. I'm on a MacBook Pro, and Mac's graphics cards don't get much better than this, so if it's a rendering issue I'd say you should look at some much much lower settings. I tried turning everything down to the lowest it could go, 11 FPS was the best I could do. Things are running pretty hot. Thought you should know! :D
All the best! Looking forward to seeing more of this!