Jared,
After several minutes of running LiveView on my Canon T5i SGP will get a fatal error and just crash. The time at which this occurs is not always consistent. Unfortunately there is nothing in the log, the program just terminates.
Here is the log from a session with the LiveView crash:
What is the behavior regarding the LiveView video when you have “Use JPG preview” vs. when you do not? I know when it is enabled the view is LiveView video is very small. Maybe this has something to do with this.