Thanks for the kind words. Regarding the speed-up I will think about it. The problem might be physics, but I have to check. Game engine physics are great when "simulating" 3000 objects colliding and going whack, but near-realistic simulation is a problem: They collide too much before reacting and then the angles are all wrong etc. I had to do much the the physics myself, but there are still some Godot (Jolt) physics I use. "When there is time for it" I want to do really ALL of the physics myself in own code, and then things get much much better, including a full and accurate replay for a level etc etc.
Thx for the feedback! Anything else weird or annoying?