Hi. Thanks very much for the feedback.
To be clear, when you talk about the 'inverse' walls, you're referring to the differently coloured wall patterns on Level 5 that swap the controls?
Do you think the walls are too thick throughout the game, or just on Level 1?
On which levels did you notice the music suddenly stopping?
And yeah, we are aware of the crappy loading lag, will try and fix that in the next update.