Over the course of 11 hours that I played this game the amount of VRAM used gradually went up to 16GB. In the attached screenshot the reduction in RAM usage is when the game finished and I went back to the main menu.
Setting are all low except textures are on very high and keep textures loaded is toggled on. There was no performance hit in terms of FPS or stutter. (I never had a stutter issue on my system.) The last game I played was extremely buggy with sounds where not playing at all including when I shot or got shot.