[AnIdiotOnTheNet]

Game developers today already have to account for significant latency in display hardware, and Windows's display stack has been compositor based since Vista. So while I'm sure many of them are annoyed by it, overall it doesn't seem to be that big a deal.

And then of course there's Stadia...

[andreyv]

Windows unredirects full-screen games, bypassing the compositing delay. This is also what sensible compositing X11 window managers do on Linux.

[Crinus]

This is mainly an issue if you are running windowed or borderless windowed games and under Windows there is latency too.

It is a shame that playing a game on a window is given such a low priority as personally i often prefer to do that for short term sessions where i'm waiting for something (email, some task or just pass time). Though under Windows with how busy the desktop environment often is it can be distracting. But on Linux, especially with a tiled window manager where you can have a tiny status bar above/below the window and perhaps a stripe here or there with stuff, it is perfectly normal to want to play a game in a window as opposed to fullscreen.