I agree with the OP. The puzzle that had you searching for stupid switches on a wall was annoying especially in a game that had (up until that point) had emphasis on alternative solutions and methods to everything.
The puzzles in this game don't encourage intelligent thought but rather good perception. On the opposite hand, most of Divinity 2's puzzles required you to think and time movement rather than spot a ridiculously small switch that is almost camouflaged within the environment. Original Sin's "puzzles" felt very cheap in comparison.
That being said, there were some very good puzzles in this game involving interaction of the environment that I loved.
