This is the answer. It's obvious when you play games on a laptop with integrated graphics. You can tweak every in-game setting to the bare minimum and/or try t

This is the answer. It's obvious when you play games on a laptop with integrated graphics. You can tweak every in-game setting to the bare minimum and/or try to stop every service that's running outside of the game, and none of it makes a significant difference, because the core bottleneck is that there isn't a dedicated GPU. The other big bottleneck that existed 10+ years ago is that people still used spinning hard disks. Now we almost all have SSDs, a big chunk of load time and source of slowdowns due to background processes is gone.