Max Yuryev posted that in depth GH5 autofocus test. And a bit suprising to me the autofocus performance seems to have some serious issues in certain conditions. I hope Panasonic will take notice of those issues and improve the performance with the net firmware update.
GH5 at Amazon, BHphoto, Adorama and Panasonic US. In EU at Amazon.de, Cyberport.de and ParkCamera.