I'm not talking about an extra 10-15sec, but easily 2-3 full minutes (I've sat here with a timer checking) to load pages, sometimes not loading them at all. Particularly with login pages, but even just homepages.
Dropbox, Cloudflare, Various companies forums, My bank, Google; each of these sites and more I've had firefox either not load at all, or take so long I've been able to copy the link into Chrome, do what I need there, then come back to Firefox still 'loading' a blank white page.
I just don't understand. I want to migrate away from Chrome and use Firefox, but it's been unusably slow when it even loads anything at all.
P.S. In the time I've taken to write this (~5min) plus the time to decide to post and find this community firefox has still not loaded my cloudflare dash... (typed in the address, waited a while, gave up and came here but left it open)
/edit: I should note I have ublock installed, but I get the same results with it disabled most of the time.
I wonder whether this could have anything to do with DNS lookups working different in Chrome. Assuming Chrome on mobile directly goes to google DNS too.
Or maybe FF also getting IPv6 records for your affected targets and there being some slow or bad connection there.
But personally I don't have much experience debugging such things on Android.
Seconding the idea that it sounds likely to be a DNS thing. Android Firefox is apparently capable of DNS over HTTP, but it's not immediately clear to me how to turn it off to see if that's the problem, unless you have access to about:config.