2.7K at 24 FPS instead of 4K or 1080p.
After shooting the Mudgee Wine Trip video, I found that there wasn't the clarity I expected in the Mavic. I had decided to shoot in 1080 so that I could get a high frame rate to slow things down.
Turns out, not only was this bad from breaking the 2x shutter rule, it also has issues with the Mavic's limitations on bandwidth. The Mavic can only handle 60mbps and shooting in the high frame rate exceeds this and causes dropped frames.
The magic Mavic sweet spot is shooting in 2.7K at 24 frames per second.