Can you share a link to your web app? Mozilla developers are very interested in profiling performance problems on real sites. You might want to check in Firefox

Can you share a link to your web app? Mozilla developers are very interested in profiling performance problems on real sites. You might want to check in Firefox's about:support page to see if there are any warnings about your GPU being blocked for driver issues. Feel free to email me if you'd prefer not to share a link in a public HN comment. See my HN profile for my Mozilla email address.