I am unable to provide useful data in that regard, as it's not common that multiple sources would be relying on WiFi to stream HD or 4K content simultaneously.Just curious what you guys are actually seeing as total incoming bitrates when you're actively streaming stuff to multiple devices, especially including some 4K in the mix. How many simultaneous streams to you have running?
Several big tech companies recommend about 25 mbps of bandwidth to be able to stream 4K content reliably to one device. So, multiply that number by however many devices you expect to be in use simultaneously.
For "regular" HD content, 10 mbps of bandwidth per device should suffice.