Please change the 20-minute rule to 5 minutes. This is by FAR the most inconvenient thing about the wiki, and makes it almost unusable
So I make an edit with an external link, click "preview", then save the page, and it asks me to wait another 20 minutes! So I wait 20 minutes, then it says my session has timed out, and now I have to wait another 20 minutes! This is ridiculous, it makes the wiki almost unusable. Please at least shorten the waiting period to 5 minutes so that it's manageable for normal people.
Also: I waited another 20 minutes, then clicked save again, now it asks me to enter a Captcha, I enter it, click "save", and now it's asking me to wait another 20 minutes! I feel like I'm in a Kafka novel, for crying out loud.