P2020

You make my day! I'm in waiting line for R5 ... 😉 Thank you!

Everybody here agrees that the R5 has overheating problems, but whether or not it's a deal breaker depends on the users usecase. For me, the R5 seems to offer something very useful and I have therefore ordered the camera fully aware of the overheating. It seems like this makes me a canboy from your point of view, and you seem to refuse to acknowledge that the R5 might work well for users with different needs than you. My last Canon camera is the 6D from 2012 and I own newer cameras from both Sony and Panasonic. The R5 will enable me to retire my Sony camera and 6D, while my GH5 will cover the the cases where the R5 falls short.

We're going to need to carry a laminated spreadsheet of all the possible recording options and the overheating protocols while working with the R5. I really want to like this camera, I really do.
SMH.
Chris

So maybe the HDMI out is somehow bypassing the artificial limits, or maybe it's bypassing the temp controls and damaging the camera. I don't know.
Regardless, and more importantly, the 8K Raw is the best I've ever seen. Point blank. Detail and color are next level - I think it's finally approaching what the eyes can resolve. Immersive, transparent, 3D, microcontrast, etc. 8K raw footage is truly a compilation of high res stills at 24 FPS. Can pull stills and send them to editorial—game changing in the way RED advertised w/ EPIC. But RED didn't have autofocus - this does. Every. Frame. Sharp. I was impressed by the BMPCC6K - the increase in resolution made a huge difference from 4k, and this R5 8K RAW is just as big of a jump. It's kind of staggering. You don't know what you've been missing unless you actually scrub through this footage, which you can in Resolve (good luck w/ the h265). 
Bottom line, the 4kHQ 24 seems viable w/ the Ninja (unless it destroys the camera). But who cares, you can get high quality 4K anywhere. More importantly 8K Raw is 100% the bees knees. That's the only news I care about from this point forward. Andrew, make it happen.

Just got my hands on a R5, tested w/ Ninja V. No cards, LCD display was off, I had mine closed to the body - recorded continuously at 4KHQ w/ autofocus (rf 50 1.2) and IS on. Recorded continuously until 1.5 hours - when the battery (regular LP-E6) died. No overheating temp indicator, but the body was HOT. Hotter than any body I've felt, and I've felt a lot of bodies.