Thanks so much for continuing to check out the game! :)
Feedback like this is so great and I really appreciate you taking the time to test the game out a bit.
I definitely agree, I still want to flesh out a lot of the actual content rather than systems, and I think since I now have a stable base for crafting, building, etc. I can move onto making some deeper crafting trees, more resources, buildings, etc.
Also with the framerate issues, there's definitely some places that need to be optimized, especially when it comes to changing the map (mining, adding/removing objects, etc.). I believe currently if you add a lot of lights it also drops quite considerably because I'm using my own lighting engine before Unity introduced their own 2D lighting engine, so I'll probably look into switching over to that as well (since mine is far from optimized haha).
Again, thanks so much!