Plutonium

Hello
I got a WQHD Monitor (2560x1440) but bo2 do only in Full HD. I tryed everything, Fullscreen, r_fullscreen, r_mode but its going only to Full HD and switch to 800x600. can someone help me?

hello i have a question
can i change the gamemode or the map if i start a game with xpartygo? so like, /map mp_nuketown or something? if i try this im getting a error

thanks