"Is it possible the pads have been setup to work with another opengl game and DP2 is using the same config?"
No, I'm sure.
Another problem I found with previous demo version was the config not saving, but I think this was working on the last version. I'll test to ensure.
As you can see in the pictures you can see it's pixel perfect, although the colors looks better live. The photos looks desaturated.
Many thanks!