The latest update contains a bug fix and speed improvement for the Language/Translation system.
There’s a new “Check Errors” button when you open up an individual language from Settings > Language:
Click this and it will display any words that should not be in the translation system, and give you the option to remove them.
This will clean up the page to make your translations easier to manage.
Also be sure to click the “Remove Duplicate” button from Settings > Language. This speeds up the translation system even more.