Every time I turn on my phone after one of my group texts has been going off I get a notification for each individual message. I wish there was an option to silence notifications when they are coming in bulk, eg., if ten messages come in less than two minutes then silence all notifications from that chat. It could even be something as simple as an interactive button on the notification pop-up/menu that has an option in settings which allows you to configure how long the silencing lasts when you use that button. I usually end up blocking them entirely via Android's settings until it's over, but I hate doing that because it's easy to forget to turn them back on