Great video comparison between R5, 1DX III and Sony A7S III.

https://www.youtube.com/watch?v=_WBLMr6GqJg

More and more, I am seeing people speculate that the R5 "overheating" issue is firmware based, as the camera shuts down and it is not hot, the internals do not feel hot, etc. This group highlighted that and openly wonder if the "overheating" issue will be fixed in a firmware update.

BTW, I really think it is odd that everyone compares the Sony A7S III, a camera really optimized for videography to the R5 and, in this case, 1DX III, which are really still a photography first cameras. But, whatever. Not surprisingly, videographers mostly are concerned with video features.