Well, 512*4 = 2048
4^2 = 16
illepall
You are saying exactly the same as me, but you dont realize how much more ram consumption the result will be.
now 30MB -> 4 times the res -> 480MB
illepall

illepall
illepall 


illepall doesn't apply to me in that post I guess.
I couldnt know that you only wanted to increase the asphalt texture. Sorry for that 


