I've had to buy a completely new phone because of this problem, was happening for a month straight since the new Android 10 update. It absolutely ruined the phone, slowed it down, turned sluggish, got rid of features but worst of all barely charged! Plugging it in (offical plug/wire or aftermarket) you'd be lucky if it stayed charging for more than 5 seconds and when it did, it would still take 7 hours.. What happened to this great phone, and why the complete inaction from Asus? I'm so disappointed, this was my first Asus product & will now be my last.
I don't even know what to do with mine, it's unuseable but I can't sell it in that state, so I'm £400 down for lack of manufacturer competence *sigh*