Thanks for your feedback!
We're currently working on improving the performance. It will hopefully be a lot better with the next update! :)
As for the character, the design is not final yet and we will take all feedback from you guys into consideration when we iterate on it!
But that will take a while longer as we are currently concentrating on implementing more gameplay features. It will happen some time down the line, though! :D
We hope you will take the time to check the game again after we update!