The baseline performance for any sort of react-based web app is going to be pretty bad if you're comparing it to a state-of-the-art game engine. The build statu

The baseline performance for any sort of react-based web app is going to be pretty bad if you're comparing it to a state-of-the-art game engine. The build status page for the CI/CD pipeline we use at my work has around 2x the CPU usage as this demo, for instance. It would be surprising if cljs's persistent data structures are incurring any real user-perceivable cost over JS arrays and maps, given how small this project is. That being said, it would be interesting to know how much of a penalty you pay as N gets big using a deeply nested persistent record vs a flatter component system with immutable persistent structures vs a pile of mutable structures.