Delay on start from windows source

Submitted by Alberto Fanjul

Link to original bug (#775236)

Description

Trying to stream a screen mirroring from windows I get an undefined initial lag https://github.com/albfan/miraclecast/issues/103#issuecomment-263050110

I can provide dumps, logs or do any check you need.

Maybe related with

https://bugzilla.gnome.org/show_bug.cgi?id=769536

Version: 1.x