Hey guys,
I stumbled across a fix for one of the most annoying things about this camera. When you click the magnify button when reviewing pictures, it can can take anywhere between 3 to 5 seconds for the camera to respond to check critical focus on photos. Its the worst when you're trying to be fast!
The fix is to set your camera to RAW&JPEG and then set the Image size to "S: 11M" (Camera settings page 1)
Now when you take a photo you will get the full 42mp RAW, but the camera now uses the Small Jpeg for the preview and there's virtually no delay!