I recently typed an answer with a few formulas in it. While I was typing, my browser constantly reloaded the preview part below the typing window. Because MathJax apparently does three passes over the text, typing became so slow that I could not even read the source code I was typing without some...

The constant compiling of MathJax while composing a post is undesirable for me. How can I stop the MathJax preview? Is there a way to turn off the MathJax preview? Where is the button to switch off MathJax while typing a post?