Snap 805 force gpu 2d topic

If i select this option in developer option will save battery in snap 805?

Guys,Please post snap of your back panel, near the volume keys topic

I believe my back panel is slightly raised near the volume keys, I see small gap there. I don't have any other phone to post snaps at this moment, Will you please put zoomed snaps of your back panel near the volume keys.. Would like to confirm if it is a issue with my handset only or it looks same for other handset too.
Thanks a lot.