@weirdh I already put console=tty3 some days ago, but it doesn't really hide the console, it just leaves a black screen instead of text.
Actually, I don't really see the console when I run my scripts, I see a black screen. But since, I had console=tty3 I deduced that there would normally be console text instead of a black screen.
It will be difficult to completely hide that console/black screen, maybe it's not even possible.
Anyway, with the icons and detailed names in my scripts, it looks a lot better and 2 or 3 seconds of black screen isn't that bad I guess xD
Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first