Pixel 2 XL, also no issues or even any noticeable deltas between Chromium based browsers and Firefox.
I'm using Fold 5 and can tell a difference in scrolling performance between Samsung Internet and Firefox. There are also some issues regarding how the UI handles transition between folded to unfolded and vice versa.
Which phone do you use?
Pixel 6 here, no issues.
Pixel 2 XL, also no issues or even any noticeable deltas between Chromium based browsers and Firefox.
I'm using Fold 5 and can tell a difference in scrolling performance between Samsung Internet and Firefox. There are also some issues regarding how the UI handles transition between folded to unfolded and vice versa.
This is a known issue
https://bugzilla.mozilla.org/show_bug.cgi?id=1813844
Pixel 6 and Samsung A45 here Firefox is so fast I never had a complain or needed to use chrome or Samsung browser
Doogee s96 pro.
Pixel 7 Pro on GrapheneOS
No issues. Been using Firefox on mobile and especially Linux since ever