Holding down a key on the keyboard does not cause it to repeat correctly. The key will repeat, but only after 2 seconds or so. In some cases it doesn't repeat at all. There are a few suggestions floating around in forums but none seem to correct the problem. 

Settings in preferences are ignored:
[![enter image description here](https://i.stack.imgur.com/gM5NO.png)](https://i.stack.imgur.com/gM5NO.png)

Interestingly, key repeat does seem to work in Terminal, but that's the exception. It's broken in Notes, Mail, TextEdit, etc.

Any ideas?