Overheating update:
After all the reports of others not having any success with 1.4 I decided to do a little more testing this morning. I am 98% sure I know why I am seeing such long runs,
Airflow.
My tripod is setup in a space that allows for some of the airflow from a window fan to hit it and it seems that slight breeze is enough to keep the camera from hitting the thermal threshold when the outside temp is below 22c.
Moving my Camera to another room without the airflow resulted in 50mins and 55mins runs before thermal shutdown in room temps of around 23-24c.
I really got excited that something had changed but looks like it has not.
Sounds like Jared Polin ran into something similar -
https://www.instagram.com/reel/CSy-zRrlTD6/?utm_source=ig_web_copy_link
Sorry for all my excited posts
Test Settings:
R5 Firmware - 1.4.0
CFExpress card - Sony Tough 128GB
SD Card - Sony Tough 64GB
Lens - RF 15-35 F2.8
4K-D 23.98 ALL-I
Canon Log enabled - C.LOG3
ISO - 800
Shutter - 1/50
Aperture - F2.8
Stabilization - ON
AF - ON
I might look into the Tilta fan after there are some more reviews on it. I did notice the spot on the back of the camera where the screen swings into hits 100F and above when the thermal warning appears, keep this area below 100F and I do not seem to be getting the warning.
Not sure I really trust my own testing at this point so take that for what it is worth.