r_mode -1
r_customheight 852
r_customwidth 480

Does not work on my laptop. In fullscreen I get a small quake on the bottom of my screen with a big black border around it.

r_mode 7 doesnt work too. Same error.

r_customaspect 1 is set to get 16:9 resolution.

My displays native resolution is 1366x768. I need a lover one to prevent framedrops.

What can I do?