Yeah, I had the same reaction - The puzzles were definitely "learn how to think a new way," my favorite kind. I ended my play on one perspective-shifting pattern puzzle that I was so close to beating, so I kept pushing myself through the motion sickness, and just ended up disabled on the bed feeling ill and unable to move for two hours (without completing the puzzle).

I tried a bunch of things - permanent reticle in center of screen, disabling walk shake, etc. I still play high-motion FPS shooters with no issue. It's just some games (The Forest was another). I am guessing it's a middleware-introduced visual filter that adds 15-25ms delay to screen latency, just enough to mess with inner ear visual/motion sync in sensitive people.