On a limited connection, I’d advise not updating whilst watching a video. It’s also possible to download a video and watch it whilst updating.
Beyond that it’s not easy to answer - as I don’t use discover, but also never do updates without paying attention, so that watching a video at the same time isn’t something I’d contemplate.
Is this thread intended for 1. Android/mobile users 2. iOS/mobile users 3. People with computers/mouse/keyboard or what? It seems most Lemmy threads are pretty exclusively aimed at mobile users.