I'm currently playing QL on 1024x768 (r_mode 12) on my 1366x768 resolution laptop. I set it up like this when I started using the laptop because I've always played on 4:3 so it felt right, however now I'm beginning to feel I could make it a bit wider. 1366 would be too wide, so I want a custom value of something in between, i.e 1150 / 1200.

The only problem is, when using r_customwidth 1150, it just shows it distorted, aligned to the left side with a fucked up view of the desktop on the remaining space on the right side.

tl;dr How do you use r_customWidth properly?