A previous dev has suggested that the GTA 6 map needs to be more compact plus more densely packed. Having said that, as leaks have continued to trickle from Rockstar, modders have recreated the GTA 6 map in GTA 5's engine which supplies a sense of its enormous scale. https://gta-six-leaks53074.blogolize.com/5-tips-about-grand-theft-auto-6-wallpaper-you-can-use-today-74406750