I've been editing a 3-camera seminar that lasted for several hours. So I have several hours X 3 cameras worth of footage wrapped into one Multicam Track in Vegas Pro 16. As the video plays, I select the take I want to display by clicking my mouse on the camera, 1, 2 or 3. After a while of editing my ability to click on any of the takes goes away. I can click all day long, but the same take just stays highlighted with the blue borders. In the screenshot below, I am unable to select camera 2 or 3. I have to shutdown the software and restart in order to be able to continue working. This has happened many times in the past week, while editing this project. I am running an AMD CPU and GPU (see specs in signature below).
Does anyone have any ideas what might be going wrong here?
Thanks.
Screenshot: