I just open your Media soup Demo(mediasoup demo) from windows machine and it just restart the system, also i tested with i3 and i5 intel processor both processor has same results with Media soup demo.
Machine Configuration :
OS : Windows 10
Processor : i3 and i5 intel
It is surely something else which is causing crash because how can a website cause OS crash? May be your browser is not up to date or as per your machine. You may have to check crash logs to better get the idea.
Windows isn’t really friendly, if this happened on several builds it’ll take time. Windows is not overly supported without loops to hop through.