It seems to suck on the BB juice at a steady rate of about 1MB every minute, which is quite a lot for an app in 'idle' state. I was quite surprised at the amount it was guzzling.

I know its Discord that's doing it, since the moment I shut it down the meter stops going around on its own. It only moves then if I refresh a page, or open a new one.

Unfortunately, to make up for the loss of an entire GB against my daily allowance by reducing my usage to an absolute minimum, I've had to stay away from the Discord site altogether, and block the adverts on this page for a while.

I will be back on Discord in my browser in a couple of weeks time - when I'm not so 'overspent' on my BB account.