Original report:

"Recently we started seeing serious performance issues in Chrome when compared to Safari on iOS. According to chrome://tracing on a desktop machine it seems to be spending a lot of time allocating canvases. Unfortunately I don't know how to get to chrome://tracing when running on a phone, but the slowdown seems consistent on desktop too when comparing Safari vs Chrome on the same computer."

demo app here: https://butterfly-flutters.firebaseapp.com/gallery/gallery.html