So far I've found that I can shoot at 960x500 raw with no dropped frames with Global Draw off. I'm using a SanDisk Pro Extreme 95MB/s SD card.
- If I turn Global Draw on with focus peaking and/or zebras on, it drops frames.
- However, I can have Global Draw on with the Histogram and waveform monitor on and it records with no dropped frames - just as long as focus peaking and zebras are turned off.
-Also, if I plug in the mini HDMI cable and connect to an external monitor I can continue to shoot with Global Draw on, histogram and waveform monitor on, and no dropped frames.
I think it may be time to shoot some real stuff

Very pleased - thanks so much to the ML team.