Why is Wordpress autoformatting my html?

It keeps breaking my html code by adding <br>'s and <p>'s everywhere.

I mean ffs, it even adds them around html comments. And forget javascript - it adds <div> tags around every line.

How can I make it stop?

Note: I only want to disable this for a specific page, and the issue is only occuring when editing html using the html content editor within the admin panel.