alt Hacker NewsDoes macOS even have exclusive fullscreen anymore? I haven’t looked into it, but my impression is that it fakes it with borderless windowed even when the app explicitly asks for it.
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Regardless of how it worked, the game asking for it caused problems
Yes. On Apple Silicon Macs (w/ macOS Sonoma or later), native fullscreen automatically triggers Game Mode. This feature slashes input lag by prioritizing CPU/GPU resources and doubling the Bluetooth polling rate to 240 Hz for wireless accessories. Gaming works very well in this mode, even with PC titles played thru crossover.
Conversely, using borderless windowed mode instead of native fullscreen on macOS adds rendering latency due to the Desktop Window Manager (DWM) compositor. The latter is 'doing it wrong' and has the lag people don't like.
it does still exist as far as i understand it. the resolution you select affects the size of the mouse cursor and then when switching away from the game you can see the rest of the system resizing back to normal