So I have shot a few timelapse with this camera over the years. This summer I plan on shooting almost exclusively timelapse with it. The problem is with the internal intervolometer it shuts down after a while. It seemed during astro would be a couple hours. Just now at 80 degrees in the daytime it lasted 20 minutes before it shuts down the power and obviously stops shooting. Today I'm shooting on 64g 80ms cards. 1/2500. Buffering is never an issue. Does anyone know what could be causing this? Camera turning off during shoot.