A former dev has advised the GTA six map should be smaller sized plus much more densely packed. Having said that, as leaks have ongoing to trickle out of Rockstar, modders have recreated the GTA 6 map in GTA 5's engine which gives a way of its significant scale. https://gregoryihedb.blogacep.com/40684803/getting-my-grand-theft-auto-6-pc-to-work