Videos take time to load - don't care though, even if it's about length of 5-7sec ad, but at least I don't see it.
Videos almost never auto play to highest resolution, I have to manually select it, no issues once I do that though.
Those are about the two key things I've noticed. I returned to Firefox few.months back, but the above wasn't an issue when I made the initial switch.
And no, there is no issue with my connection, everything else (streaming, games, torrents) works fine as it always did.
I use uBlock and NoScript
Yeah, I assumed it's Google's fault, one way or another, regardless of browser being used. And even though I don't recall it happening in desktop chrome, minor nuisance like that isn't gonna make me switch.
Tubular on android also has option for forced highest resolution so that's a nice bypass for any of google's bs as I rarely bother opening videos in FF/FFfocus on phone