Optimization Update

Hello everyone,
sorry, that there was no update for such a long time, but I had a lot of other stuff to do in these strange times. Here is a minor update to improve overall performance and to fix some bugs. Thank you very much to everyone giving me feedback.
I am still having lots of ideas for developing this game further. And hopefully I will find more time to do so again. There will be something coming... soon(ish)...