When editing the "Overview" field for a given profile I've always experienced a delay once clicking in the field and executing that initial keystroke.  The more text present in the field the longer it takes before the program allows me to freely edit the field.  When the "Overview" text extends below the height of the "Overview" window the application actually scrolls the contents from top to bottom as if it's loading the contents into memory before giving me back control of the cursor within the field.  With my TV Series profiles I include an "Episode List" and "Episode Guide" within the "Overview" field.  Making the smallest of edits after the fact has been a painful process as a result as the delay is quite significant after that initial keystoke.

That being said, I stumbled on to a workaround that completely eliminates the delay I've been experiencing when clicking in the given "Overview" field and executing that initial keystroke.  Not sure if this is common knowledge or not.  Thought I'd share the love just in case.  Once accessing the "Edit Profile" window for a given profile all one has to do is edit a text field on the "General Information" tab first prior to accessing the "Overview" tab.  I've just been adding, then removing a space from the "Sort Title" field for example.  Going to the "Overview" tab at that point I'm able to click in the "Overview" field making any number of edits without delay just as if I had a Notepad document open.  My one real annoyance with this application is no more.  It's truly a beautiful thing.