Comment by elzbardico

There's no real reason other than bad configuration/coding for a H.264 1080p 30fps screen share stream to sustainably use 40mbps. You can watch an action move at the same frame rate but with 4k resolution while using less than half this bandwidth.

The real solution is using WebRTC, like every single other fucking company that have to stream video is doing. Yes, enterprise consumers require additional configuration. Yes, sometimes you need to provide a "network requirements" sheet to your customer so they can open a ticket with their IT to configure an exception.

Second problem, usually enterprise networks are not as bad as internet cafe networks, but then, internet café networks usually are not locked down, so, you should always try first the best case scenario with webrtc and turn servers on 3478. That will also be the best option for really bad networks, but usually those networks are not enterprise networks.

Please configure your encoder, 40mbps bit rate for what you're doing is way way too much.

Test if TURN is not acessible. try it first with UDP (the best option and will also work with internet cafe), if not try over tcp on port 443, not working? try over tls on port 443.