I could swear that in the original game, it was all about getting the power bar to maximum.

But i noticed that in the puzzles i did in this, it almost seems random when they work.
There is even a puzzle on the Research Level that does not open even though the Power Bar is full.

What's up with that ?
Working as intended or bugged ?

So far it seems you need to fill power bar between or exactly on blue dots.
Puzzles are also randomized, at least what I've noticed when I started new game today.

Yeah that's been my issue with this version but I can put up with it. Less enjoyable though.

But on puzzle difficulty, the level doesn't seem to make a difference, at least to the junciton box puzzles. So far of 5 new games, 2 on easy, 1 of them has had the very first lift junction box solvable. This randomisation is definitely not working as intended on any level!