Text typed into text areas appears slowly

I'm currently working on a website which uses JavaScript to dynamically create html. For some reason text typed into text areas appears slowly. I'm currently testing the site in Chrome, and I make use of JQuery version 7.2. Additionally, I have implemented the JQuery time picker.

The code within the function which adds the text area looks like this:

text += '' document.getElementById("LCmenuHolder").innerHTML = text;

Any help you can provide would be greatly appreciated.