The left side of this screen shot is taken at 1152x864 fullscreen. The zoom level is default level 4. The right side is taken windowed desktop which in my case is 1920x1080. There is no difference in the size of the Icons on the screen.
The only difference is the purchase screens etc etc which will be , naturally, 640x480 but that can be fixed, if that is a problem, using the magnifier detailed in the sticky part of the main forum
Further....... the inserted area with the dropshadow was taken
windowed desktop mode and the main part of the screenshot was 1152x864
fullscreen mode
Don
EDIT... I apologize for the screen shots.... the forum software turned nice sharp PNG's into low quality JPG's