So I am not getting the same results. Could you clarify steps 4 and 5, because you mention standalone windowed mode in number 3, but 4 and 5 also say Standalone mode which could mean launched from editor or the packaged project.
In any case, I tested both issues and did not experience the same results. Honestly, your best bet would be to use any of the screenshot variations that work correctly. If you are running on a 1920x1080 screen like mine, and have entered that values I provided in the editor preferences, your standalone game should launch in fullscreen by default. You shouldn’t need to use a console command at this point.
I would also like to point out, unless you are creating a giant poster, using HighResShot 5 is going to create a 9600x5400 resolution image, which won’t be useful unless you are on a 4k monitor, which even then you won’t be able to see the difference in images quality compared to a lower multiplier like 3.
Thanks,