I did some testing in the meantime. Depending on what you render, it's about an order of magnitude slower currently. The renderer is as simple/minimal as possi

I did some testing in the meantime. Depending on what you render, it's about an order of magnitude slower currently. The renderer is as simple/minimal as possible at this point (the focus was on the core feature set I needed until now), so it's performance is as bad as it can be :) There's plenty of room for improvement. I'll work on a few optimizations as I have time, but contributions are more than welcome.