Video playback is also trash on most sites besides youtube when on mobile.

I can be on excellent wifi connected to excellent internet where a desktop browser gets to play the video almost instantly, but mobile chrome will barely show the video. It'll show me empty black boxes, maybe a disabled video position control. It'll sit there like that for a good 30 seconds, then maybe play a 30 second ad, then finally the 1 min clip I was linked for. Often it will again stutter hard when it gets to the clip.

By contrast, loading a mobile youtube page will play the video almost immediately, if not within 15 seconds, even on LTE.