Mouse cursor flickers when changing states using the Discrete GPU : MacOS
https://www.reddit.com/r/MacOS/comments/b0jy40/mouse_cursor_flickers_when_changing_states_using/
If your mouse flickers on rollover, it's an OS problem. : hackintosh
https://www.reddit.com/r/hackintosh/comments/baqf62/if_your_mouse_flickers_on_rollover_its_an_os/
Mouse cursor flicker (over links) - Apple Community
https://discussions.apple.com/thread/5362570
Cursor flicker when hovering over hyperlinks, only with AMD GPU : hackintosh
https://www.reddit.com/r/hackintosh/comments/9j83st/cursor_flicker_when_hovering_over_hyperlinks_only/e76jqvn/