
I've been playing PC games for decades, and for my money, few technologies have done more to make buttery-smooth performance in demanding games achievable than Nvidia's DLSS tech.
DLSS made its debut back around 2018 with Nvidia's GeForce RTX 20-series graphics cards, but it took a few years before it was really reliable or implemented well in a wide variety of games. We're now up to DLSS 4, and it almost feels like an expectation that every modern PC game with significant graphical demands will support DLSS. Many also support AMD's FSR and Intel's XeSS, which are their (roughly equivalent) supersampling technologies.