Im not sure why this demo runs so horribly in Firefox but not other browsers..anyone else having this?
In the meantime, give it a shot in a Webkit- or Chromium-based browser. I've had good results on Safari on iPhone, Chrome on Android/Macbook/Windows.
WebRender initialization failed Blocklisted; failure code RcANGLE(no compositor device for EGLDisplay)(Create)_FIRST 3D11_COMPOSITING runtime failed Failed to acquire a D3D11 device Blocklisted; failure code FEATURE_FAILURE_D3D11_DEVICE2
I'm running a 3060