The ground textures are noticeably less blurry using FSR upscale. This screenshot comparison really shows off the difference if you want to compare the two at your leisure. It does take a few seconds for your eyes to adjust, but there is a noticeably sharper image in FSR mode. 0.5x (running at half-res and scaling up) is “performance mode”, and 0.75x (running at three-quarter resolution and scaling up) is “quality mode”. In the video, you can see a number of modes running with each implementation.
Redditor “NarutoUA1337” pulled this off by porting the FSR files from another unmentioned game. It's been ported over to GTA V by a fan, and when you compare the two side-by-side AMD’s image quality definitely wins out. Thankfully, a better method has appeared in the form of AMD's DLSS-alike, FidelityFx Super Resolution (or FSR). You can use the in-built upscaler (running the game at a lower resolution than your monitor's native resolution then upscaling to the correct size) to do so, but the image quality definitely suffers from it. Despite being released eight years ago, Grand Theft Auto V can still use help with performance.
