I can confirm this issue using the given steps on pop os 20.10. All tests were run on the latest firefox and chrome versions (84 and 87, respectively) as of 2020-12-24. New profiles/users were used for each test (via about:profiles in firefox and the user feature in chrome). All other apps were closed for the tests.
76.3 - Firefox (Deb) (from ubuntu 20.10) 87.5 - Firefox (Flatpak) 86.6 - Firefox (Snap) 85.4 - Google Chrome (Deb) Maybe there is a compilation difference between ubuntu's firefox and other firefox sources. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1908082 Title: Ubuntu Firefox is 15% slower than Flatpak Firefox for speedometer benchmark Status in firefox package in Ubuntu: Incomplete Bug description: Steps to reproduce: I installed Firefox Flatpak (https://flathub.org/apps/details/org.mozilla.firefox) and Chrome. I executed closed all apps and processes and one by one I executed Speedometer test (https://browserbench.org/Speedometer2.0/) in each browser 3 times. I took the max score for reach browser out of the 3 executions of the test. Actual results: Results 100.3 - Firefox Flatpak 85.42 - FIrefox DEB (pre-installd from the store) 100.3 - Google Chrome The preinstalled DEB package Firefox was slower than both Firefox Flatpak and Chrome Expected results: I expected Firefox DEB and Firefox Flatpak to have the same results. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1908082/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
