No, he really is right. A lot of software, especially websites, have annoying waits for Vsync that are not needed in them. When you update styles that trigger

No, he really is right. A lot of software, especially websites, have annoying waits for Vsync that are not needed in them. When you update styles that triggers a reflow or repaint, then you can introduce a wait for VSync in your website thats stalls flow until it is finished. If you add 3 frames of delay at 60fps then it's 50ms of delay, and only 25ms at 120fps. It doesn't sound like a lot, but that 25ms can be the difference between feeling totally fluid and not, and a lot of websites are even worse than that. Software can be IO bound, Network bound, CPU bound, memory bound. Modern software is Vsync bound!