UserAgent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:51.0) Gecko/20100101 Firefox/51.0

Steps to reproduce the problem:
Demo (increase number of connections to reproduce: https://jsfiddle.net/3jmk6d20/
1. Try to create 200 RTCPeerConnection connections

What is the expected behavior?
Connections are created and they number is only limited by hardware capabilities

What went wrong?
Browser tab crashes on 150..165 connections created

Did this work before? No 

Does this work in other browsers? Yes

Chrome version: 61.0.3140.0  Channel: canary
OS Version: Ubuntu 17.10 x64
Flash Version: 

My use case if implementing DHT that works in browsers and this is a serious limiting issue for me. I can potentially somehow deal with exceptions, but not with tabs crashing all the time.

To be fair, Firefox Nightly tab freezes instead of crashing and manages to create few dozens more connections than Chromium nightly.