Even DLSS only works great for some types of games.
Although there have been some clever uses of it, lots of games could gain a lot from proper efficiency of the game engine.
War Thunder runs like total crap on even the highest end hardware, yet World of Warships has much more detailed ships and textures running fine off an HDD and older than GTX 7XX graphics.
Meanwhile on Linux, Compiz still runs crazy window effects and 3D cube desktop much better and faster than KDE. It's so good I even recommend it for old devices with any kid of gpu because the hardware acceleration will make your desktop fast and responsive compared to even the lightest windows managers like openbox.
TF2 went from 32 bit to 64 bit and had immediate gains in performance upwards of 50% and almost entirely removing stuttering issues from the game.
Batman Arkham Knight ran on a heavily modified version of Unreal 3 which was insane for the time.
Most modern games and applications really don't need the latest and greatest hardware, they just need to be efficiently programmed which is sometimes almost an art itself. Slapping on "AI" to reduce the work is sort of a lazy solution that will have side effects because you're effectively predicting the output.