Typing title area slowed doen after installing pro version

Hi,

After buying and installing the Youtube pro plugin i found a problem.
Every time when i want to type text into a title area (page / post etc.) the text input is slowed down extremely. When deactivating the pro plugin the text input is normal again. I already disabled all other plugins to be sure no other plugin was causing this.

Please help.

The page I need help with: [log in to see the link]