How do I add huge map layer?

hi

in my game i have to create a layer of 3072x3072

i created a map with tiles 512x512 36 differents parts of the game map.

the resolution of my game is 1920x1080

inside my game can i create a layer with 3072x3072 in size and then add the 515x512 parts?

or it is going to be too heavy?

mobil(yes) or pc(maybe no)?

pc