Lag in writing text

Hello,
the problem regarding the lag in text processing is now present once again.
When the text gets longer than a two or three hundreds words all seems to freeze and the delay before any operation can be executed, writing, deleting, selecting text, saving and so on gets longer and longer, until it’s not possibile to work anymore.
As suggested once by an user, the only way to work with the WP editor is to disable AIOSEO plugin and then re-enable it when the article is completed.