There's 6 connections all wireless. My rig should consume the most but no, the roku stick is taking quite a bit.

Yes, the simple answer is to shut off whatever I'm not using, problem is there's a wife and a kid. Both have 2 devices on at all times. A smart phone and a roku stick. I have a tablet as well but I shut it off. Doesn't really help.

I want to limit the streaming devices to 6000 kbps and the phones to 3000.

The modem is a Motorola basically, a 300mbps $50 walmart modem. I also have a Linksys N600 router which I'm not using.