Performance in GTA V 4K can be affected by insufficient 6GB of VRAM.
Performance in GTA V 4K can be affected by insufficient 6GB of VRAM.
I notice a pattern here. Performance suffers significantly with AA, especially at higher resolutions. At 4K I disable it completely, even with effects enabled. I also turn off motion blur and depth of field when available. Sometimes reducing ambient occlusion and soft shadows helps because visibility isn't as clear. As long as the textures are good and gameplay feels smooth, it's acceptable. It doesn't need to be a consistent 60fps, just stable performance.
R9 290 @ Stock, i5-4670K @ 4.3Ghz 3840x2160 all Gameplay during daytime. Full settings, no MSAA, AMD shadows Sandy Shores: 16-20 FPS Los Santos: 19-23 FPS Cable Lift Ride: 16-26 FPS VRAM: 3837 MB with MSAA 2-4x: +400MB High Settings, no MSAA Sandy Shores: 40-60 FPS Los Santos: 50-60 FPS Cable Lift Ride: 40-64 FPS VRAM: 3751 MB It seems the game utilizes all available VRAM or pools it during updates. This accounts for stable VRAM usage at high settings, even as maximums rise gradually. You’ll notice large VRAM demands on cards over 6GB, but with MSAA it typically stays around that size. The Titan X and Titan Z are the best choices at this time.
I play at 4K resolution using a GTX 980. The best performance comes from disabling MSAA and setting the target frame rate to 50 FPS. This lets me keep most other options at their highest levels while maintaining smooth gameplay.
My GPU is running on a GTX980 at 1080p resolution. With MSAAx2 activated in the settings and MSI Afterburner set to high, it's using around 3.4 gigabytes of VRAM.