Sorry, I wanted to love it, but it's way too slow compared to a simple Three.js app. Native version is a bit faster, but still laggy, though I only tried the build from Nixpkgs, might be the issue. The web builds I tried were all upstream though :(
Sorry to hear that. Mind sharing what it was you were trying to do? Most users find Rerun to be very fast when trying to do the things it was built for.