I have run into that problem as well. The way I solved it was by clearing out my application data and installing a beta version of Chrome. If you're having the same problem I used to have, try going to YouTube and clicking the "Show More" button for a video - it wouldn't render properly.
To clear chrome's application data, first make sure Chrome is not running (open this webpage in Firefox or something else). We're going to be backing up the data just in case something goes awry. Open up a terminal and run this command:
mv ~/.config/google-chrome ~/.config/google-chrome.bkup.
Try using Google Chrome and seeing if the problem persists. Don't worry, your bookmarks and things are safe in that backup or in the cloud if you're using Google Synchronization.
If the problem still persists, we can try installing the Google Chrome Beta. Google Chrome continually has three releases at a time: stable, beta, and development. Stable is designed for the general public, beta is for people who want a sneak peek at new features, and development is for people who want to live on the edge. I'm on the development version right now. The beta may have fixed the problem you are having.
Simply run these commands to remove the stable version and install the beta (make sure Chrome is closed first!)
sudo apt-get remove google-chrome-stable
sudo apt-get install google-chrome-beta