docs-site/manual/platform/mac/display-issues.mdx
If you're experiencing display issues or crashes in Anki 23.10+, you can try changing the video driver in the preferences screen by navigating to Anki → Preferences and then selecting the driver from the dropdown menu. After that it is necessary to restart Anki.
Older Anki versions did not provide an option in the preferences, but allowed you to adjust the driver by opening Terminal.app, then pasting the following and hit <kbd>Enter</kbd>:
echo software > ~/Library/Application\ Support/Anki2/gldriver6
It will not print anything. You can then start Anki again.
If you wish to switch back to the default, change software to auto, or
remove that file.
If you experience blank screens when using an external graphics card on a Mac, you can <kbd>Ctrl</kbd>-click on the Anki app, click Get Info, and enable the prefer eGPU option.
Please see this forum post.