A previous dev has suggested the GTA 6 map really should be smaller and even more densely packed. Having said that, as leaks have ongoing to trickle out of Rockstar, modders have recreated the GTA six map in GTA 5's engine which gives a way of its large scale. https://gtasixdatedesortie21963.weblogco.com/35524629/grand-theft-auto-6-steam-options