Glad you liked the visuals, I too feel the artists on our team did an amazing job c:
The shortcuts for the tools were the numbers drawn on the buttons (so 1, 2 and 3 respectively), but it might not have been super clear. As for performance, we had some performance issues in early development that I thought we had squashed, but it seems I was wrong :0. If you don't mind me asking what specs your laptop has? So that we could maybe pinpoint where the issue is.
Thanks a lot for the feedback!