Android 版 Firefox サポートフォーラム

I have had this problem on two separate midrange samsung phones now: after about an hour of browsing, firefox slows down considerably. Pages take a long time to load and tapping input registers erratically, sometimes i tap a link and after a few seconds a different link opens, as though the tap was registered from a different spot on the screen. This is happening even on a brand new phone, and after emptying the cache. I wish I could keep using this app because of privacy concerns but it is genuinely unusable for me now. This problem has cropped up in the past half a year

I'm trying to synch from Laptop Windows to phone android. On screen instructions. Synchronise Firefox on your phone. Open FF on your mobile. Go to menu (3 dots) tap Synchronize and save data. There is nothing on the drop down menu that says this on my phone. I'm logged in on Laptop and Phone to Firefox.

When googling stuff they changed something to where it now opens youtube and autoplays a video when I click on a search result drop-down arrow(image 1). It just it to dropdown to give more info and I could choose to watch the video if I wanted to, like it used to(like image 2). It is getting annoying to switch back to Firefox every other time. For clarification, I don't want to completely disable redirecting but just change it back to how it was. Can't find any setting to change it, does anyone know how to fix this?

Firefox just used almost a GB by just opening it! I only typed a Google search, and the next moment my phone tells my I'm out of data!

Note that this is foreground data, not background data. I googled and found answers about media playing in the background, but I haven't watched anything recently, so no streaming link should be active. I installed Ublock origin so I hope that might help.

Attach is my Firefox data usage for the past week of barely using it, except for an occasional Google search.

I found that X (Twitter) videos don't autoplay although the corresponding setting is enabled in Firefox for Android.

Please check my screen recording for the reference.

Is there anything I am missing?