Need to limit bandwidth (rate) by port

I need a switch where I can set limit rate or bandwidth by port.

 

Here is the situation. My church streams and we currently have a 10Mbps down and 1.1Mbps up. If there is a few people are on the network (WiFi), then the sustained streaming rate is fine with no caching or drop outs but get 60-100 devices hanging off the wifi. If ever all will decide that now is a good time to download updates or something else, then the stream is shot to...

 

I am thinking that if I can limit the rate through the ports I connect the WiFi devices to, this will limit how much of my "pipe" is used so I can keep the 1.1 Mbps upload untouched. Or if there is a way I can dedicate that much bandwidth always for upload only that would work to.