Having the same issues are with mine... (aside from the compression that i am still trying to figure out) The issues of it booting on and off - mid shot, only happen on a 64 gig card. On my 32 gig card it's fine. I am talking with Marianne about this. I hope she has an answer. Out of the box, the compression rate is too low -very grainy- which is why I am wanting to change it.