look like i'm not alone having a problem with the GUI being smaller than normal... here a screenshot to illustrate the problem:

as you can see, the game is messed up, it should looked like this without crt:

update: i managed to make it work by removing "resize_window()" variable in room_start but one problem: my game use the aspect ratio of 16:10 instead of 4:3 or 16:9, it might be a good idea to split the aspect ratio variable into 2 variable on the height and width. example: if it's 16:10, it will be aspect_ratio_width: 16 and aspect_ratio_height: 10. what do you think?