Thanks for playing. Glad you liked the loop. I was thinking of how to make collecting ores fun and mainly thought about Minecraft and Terraria. For me in Minecraft it's that initially it can be tedious but the sounds/feedback and gradual improvements make it satisfying, and in Terraria I always like building the hellavator cuz it's just fun to blow up a ton of ground, so I tried to combine them. Happy to hear it worked quite well :)
As for performance I was actually surprised how many times I had to profile and improve sections of code. I personally had a pretty stable performance (above 120 fps all through) but I'm also on very recent hardware (9800x3d + 7900xtx). I'll keep it in mind tho and test my future projects on my laptop as well.