Soldato
Something really strange is happening.
Over the past week or so i have been inching up the BF4 settings in Mantle and then playing for a few hours to try and find the highest settings possible for my miserable 2GB of vRam.
I'm now running everything on High and low post AA, including the two dreaded texture settings which on anything over medium usually cause the Memory to run away with its self ending in stuttering.
This time; not only is it stutter free but i have seen my vRam hit 2.2GB (on a 2GB card,) this according to the BF4 Mantle overlay, and it just soldiers on, seemingly quite happy.
So, i'm going to continue to inch those settings up, next its from SSAO to HBAO.
You don't need more VRAM you need mantle to sort its memory usage out. I'd just wait for it to be fixed if I were you as it's clearly a big. The game sing that intensive.