Hello.

PC was very powerful, and ran the game at native resolution with no issues. PC died.
Laptop is quite powerful, but at native resolution of 1920x1080 the video card isn't quite powerful enough to support absolute perfect fps (this slows down targeting, and action bar navigation which in turn cripples my performance as a player in game)

tl;dr

If I lower resolution in settings, the game runs full screen but with black surrounding the sides. How do I make it stretch and be full screen but in lower resolution?

In advance, thanks for your help!