Hey Patrick,
Hope that you find this message well.
I do not know if this already implemented, but I think it would be cool if you could run your webpage speed testing program with a screen resolution.
My website is responsive clear down to 600px currently with plans to go down to 300px using bootstrap.
Anyway, I have different images/results that show up as the screen resolution increases and decreases and think it would be cool to compare the speed with different resolutions whether it be a PC with a small resolution or a mobile device with a 300px resolution.
Sincerely,
Travis Walters