Hmm, what a bummer :/ Others have also reported performance issues. It seems to happen to, well, some people but not all.
I think I narrowed it down to the way the terrain is painted when an egg splatters on it. It’s the first time I’ve ever done something like this, so I see now that there could be some issues with my approach …
I’ll try to publish a patch after the jam ends, and you can enjoy it even more :)