Do you mean 'Width' and 'Height' from Project Settings -> General -> Display -> Window?
I set them as following: Width: 1920 Height: 1080
Or do you mean another setting?
Yes, window width and height to 1920 x 1080. Leave test resolution at 0 x 0. Stretch aspect at keep height and stretch mode on 2D. You might have to adjust your game level or sprite size/scale to work at the new resolution, but it should look much better and be more compatible for people with 1080p or higher monitors.
Yes, I have these settings enabled, except 'Stretch Aspect', which I changed from 'expand' to 'keep_height'. Actually I tried several options in the Stretch Aspect, and all of them gave the same result. I didn't see a difference.
