When attempting to take a Unity simulation test inside of the GMetrix SMS application, you may sometimes receive a Javascript Console error, similar to the following:

This issue occurs because the Simulation tests and Javascript that runs is optimized to run inside of a web-browser. You should open up a web-browser (we recommend Google Chrome), go to www.gmetrix.net, and login to your GMetrix account. From there, select the same test, and the Unity content will load as intended.