Command Line Switches per BrowserWindow

Since we can open more than a BrowserWindow, wonder if there is a way to open each one with different command line flags.
I think this should be possible, well I am assuming a BrowserWindow is basically a chromium independent process. Am I wrong?

I basically have 2 windows, both uses webRTC one uses audio only, the another one uses screen capture.
Only for the one with screen capture i want to apply this line:

app.commandLine.appendSwitch('webrtc-max-cpu-consumption-percentage', 20)