When I experienced a little lag in the beta, I reacted by lowering settings to account for the number of players.
What I found was that by lower some setting (textures etc) to medium while maintaining the 1080p resoultion, it caused the game to appear very blurred (not enjoyable at all).
So Im assuming, it would be better to adjust the resolution 1st & foremost before touching the supporting options.
ofc....I ended up reverting back to my initial settings, and had no lag (something got fixed fast )
Anyone else have any experiences with adjusting the graphics and the results?