Hello there!
We do have a (custom, borderless) NSWindow which is moved / resized by app methods, not standard window-titlebar-live-windowsserver-assisted method.
In macOS14 Sonoma first developer preview, AppKit seems to be rearchitected and window management is all new. All window modifications now seem to be synchronised with display (v-sync) and thus slower.
That's fine but if we have two windows moved at the same time (we have a transparent child/parent window which is moved together with window), it's two times slower. That's very slow.
NSDisableScreenUpdates or CATransaction doesn't seem to have any effect like they did before. Any ideas?
