On my laptop, I just go to the 'live streaming' tab in the top right which then brings up another window and then I zoom in to 250% using the magnifier and then maximise the window to make it full screen and works really well.
As for Dan, Tiafoe is the worst of the 4 places where he could have landed and it's a tough drraw, but at least he is in it. Plus, 'Big Foe' lost in straight sets to Jason Jung in NY last week so it should be a good test and if he can win, he'll have a WC or fellow Q in the next round.
Dan beat both Dominic Thiem, then WR 8 and Marin Cilic WR 7, in 2017 in Sydney and Australian Open respectively. He also beat Nishikori, then WR 12 in the US Open in 2013.
His closest near-miss I think was the US Opem in 2016 where he took Wawrinka, then WR3 to five sets. On his day he can definitely cause a top 20 upset. Just not quite sure if he's back to his absolute best yet. But would love to see it.
I'm watching on Bet365 - perfect quality, don't think I've ever had a better one from that POV, but there is literally no sound - no crowd, umpire noise etc, so it's very weird. It's like someone has muted it - is that the same for anyone else?