I personally also often run out of bandwidth and start limiting it during peak hours by reducing activity. The burden often peaked at night time my region's premier time. The number of users who increased dramatically earlier this year made me unable to do anything other than reading other steemian posts. As there is an uncomfortable bandwidth restriction.
I make sure it's not spam and only comment on a number of accounts that match my interests. at most around 3-5 accounts, but I often lose moment so have to wait tomorrow morning.
I think new users should be post boundaries by generating good content and not meeting traffic during peak hours.