Firefox on Android Jellybean 4.2.2 is soooo slow?

I am a long time user of Firefox on my PC. Could not do without it anymore :)
So ofcourse I did install it right away when I got my Samsung Galaxy Tab 3 WiFi with Android Jellybean 4.2.2.
And it is like a total other world: it is sooooo slow. It takes such a long time before the pages are even loading. It's like FF is first figuring out what it has to do with the URL:
"Eh? What do I have to do now? Wait, wait, don't tell me, I know it! Ehr ... what does he mean? What was it again? I know I have to do something now but what was it again? Oh, he wants me to go to that URL! I think? Yes, I am sure now that I have to go to that URL."
And then the page is loading. The actual loading of the page is just fine, no slowness there.
I did try all kind of things mentioned here at the forum (clearing cache, moving cache to another place, uninstall FF and install FF fresh again, and so on) but nothing helps. And no add ons installed at all.
I also did try it with and without syncing with my desktop FF but no result.
The native Chrome browser is lightning fast in comparison to FF.

I am using Firefox Android 28.0.1.
And thanx for the link, will try it.
Have to say though: did a lot of searching here in the forum, on Google and so on. And what strikes me is that there are rather a lot of comments/complaints stating that FF was fast but since a few months ago it became slower. Could not track the precise date or FF version but it looks like this started around 4 months ago?

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Firefox on Android Jellybean 4.2.2 is soooo slow?

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