I had a similar experience like Graugen, I could not tell that the top right corner UI was a button and got stuck in the first area. I gave it another go when I saw your reply to Graugen. Like Graugen, I too had a drop in frame rate in the area with the red barrier which made the game unplayable so I had to stop there.
But what I managed to experience was enjoyable so I updated my rating to be higher! Btw, this game has the smallest spikes I have ever seen in a game :D