

Try ticking and un-ticking both of these options to see if any combination of these settings has an effect on the preview problem. In the video preview section of these settings are the following checkboxes: Within Studio go to Setup - Video and audio preferences.

If you have Studio version 12, download the latest version.If you have Studio version 14 or 15, there is no update at this time.

Make sure that you have the latest version of Studio installed.
