I tried to use Variable Frame Rate today and my GH4 would not focus in more than one small spot and it was very difficult to even achieve that. I've had great success in MovieMode with 1080 P60 and AFF but not 4k or 96fps. I want to use it to shoot bowlers and then critique their swings/ball release. But it seems worthless for unattended (yes I want to be in the movie not behind the camera) Video of 90 minutes or more. I have tried every setting I could find to no avail, so I must be missing something.