I've been enjoying it for a couple days, but I'm starting to get a bit tired of it. I've almost finished it but the game just starts to be time consuming rather than challenging.

This is very much in the same style as SpaceChem. Those games are cool at the beginning, but as you progress there is little new to the gameplay and the puzzles simply become a lot more tedious. They compensate for it by adding the stats so you can "perfect" your layout.

I miss games where solving a level required trully a flash of insight - Lemmings used to be like this. Once you progressed past the basic stuff, Lemmings levels required actual thinking. A handful of them were tedious, but most of them simply required figuring out how the level actually worked. SpaceChem and Infinifactory miss that mark by a mile. There is nothing fancy about any of the levels. Furthermore there isn't even better/worse layout - some layouts have fewer blocks, other require fewer cycles. Most of the time it's a tradeoff.

I enjoyed the added "story", not that there seems to be anything to it related to the actual gameplay.