It sounds like the same issue that was on some of the Rugby on Demand games this week, where there was a constant static loud sound.
Might be a good idea to report it to NOW live chat.
Click on the green chat online button from the link page below to contact NOW live chat.
@ContentTeam can you investigate ?
I just tried F1 GP Practice 1 on Demand and it's the exact same static noise has some of the Rugby Union games that was reported this week on Demand.
Only thing you can do at the moment is to report it to NOW live chat.
Can confirm the constant hissing sound. My girlfriend contacted customer support who told her to do random (useless) things like uninstall and reinstall the app, disconnect wifi, and also ended the conversation on her TWICE.
When she mentioned that we only subscribed for F1 (£40.99) a month, and that it was the same thing last weekend, she was told that she could get a £1 refund. Like, are you kidding me? Absolute joke, and hilariously bad customer support. 😄
Seeing this thread and others, it's obvious NOW knew the problem was on their end.
£1? I think Now are taking the hiss 😛