When Google Earth web used NACL, it was so silky smooth, it wasn't even like it was the web. Even on relatively weak hardware (dual core laptop), it was so nice, didn't skip a frame. First time I tried this in stable Chrome it locked up my entire computer. Took about 5 minutes to be able to reboot. On reboot, when I run it, it's like a slideshow, unusable (Ryzen 3900X 12-core beast with RTX 2060 Super). I really want to get excited about WebAssembly, but this doesn't do that.