say_doyster
Active member
In addition to card speeds (V60, V90) you may want to check if diffraction compensation is turned on. I had a similar problem with a G9 (camera crashed - Lexar and Sony cards, pre V60) with marginal cards when this feature was enabled. Once off when shooting video, I have not since had the problem. May only be coincidence, but worth a try if it is on. I have since turned it off on my GH5 and 5S for video just to be safe. Faster cards definitely work better - V60 and up.