We had an... interesting experience with this game. I played with my friend because I suck at internal mapping and we got extremely unlucky with the safe code. The numbers were "1 2 3 4 5 6" and we didn't realize what it was meant to do until we looked in the code editor. It has a very neat concept and fascinating technical ingenuity but a lack of directions and it took us almost an hour to beat level one, although not all of that was the developer's fault.
We had absolutely no issues with lag or frames.