The background bitmap command distorts the image when using the 1:1 option.
It works fine in V5
[Also, the picture command presents a white box with no image, but at the correct size using 1:1 option. This is likely due to my old laptop video card, whose drivers cannot be updated, running with the generic microsoft drivers, which is the only way I can get V6 to run…]
As a test, in Rhino V6 Options > Advanced, change the list filter to “UseHardwareDriver”.
Remove the check to set it to False.
Close and restart Rhino.
Is that better or worse?