I get around 75fps in iRacing with a stock 290X, and thats at 7680 x 1080, which happens to be the exact same number of pixels in a 4K monitor. As 'racing sims' go, thats almost certainly the most popular, certainly amongst those who like to take it relatively seriously, compared to the sims that favour closer to arcade for the mass market.
I also get 60fps in Assetto Corsa, which is more impressive with the visuals, but really iRacing is impressive enough IMO for immersion.
My understanding was that a 1080p resolution was 2x 1080p screens, each rendering their own version of events, is this correct? Does this mean 4K isnt simply 4K, but double that, bar any outer pixels which dont render as they're out of view or lead to a somewhat distorted shape picture.
Im still very much on the fence, the inner child thinks its a game changer unlike anything we've had before, having a real immersive connection to your game world. But my head keeps coming back to nausea, image quality/sharpness and what hardware would be required to achieve such results, and the idea of being unaware of personal surroundings and ability to use things like a kb&m while effectively being blindfolded by pixels. Fortunately racing games have wheels, which sustains that belief, likewise a flight sim could with a HOTAS, but theres always KB moments, and it'll lead to fumbling, and in competitive settings, fumblings are detrimental, they're a weakness.
I really want it to work though.