Some more demo tests:

Click on the following one to unpause the game:

Still a noticeable amount of quivering that I can’t tune out just by manipulating parameters. I played a little bit with trying to damp small amounts of energy, but I think they’re not actually low energy when they quiver like that so it’s hard to filter out. I think in many typical game uses it won’t matter much because they won’t generally stack up the same way, but hopefully I can iron that out.

A basic tile engine is now also working. Demo to come.