I'm currently experimenting with window size for a pixel shmup game.
I want to go for old shmup games, like Strikers 1945.
This is my project with 640X480 size.
Does it look good to you? This looks clearer than above.
You probably want to use the shrink. I think if you set to 2 it will emulate a 320x240 resolution, which is closer to those old games.
I would recommend setting the resolution to 320×240 directly instead of setting Shrink to 2, as it will let you preview your UI at a correct design size in the editor.
Good point.