Try this one, FreazyKam Free Browser based CAM
Yup, agreed, this will tell us some valuable info. With all the different settings changes your ID never seems to move. We need to see a different cut. Double size lets us see if the error doubles, or stays consistent.
Honestly neither dimension moves much or as we would expect it so let go bigger to add a real new data point.
Use a Vbit or a pen and do the squaring calibration and tell us the dimensions of your 4 corner dots, X, Y, and Diagonals.