Having used both Hero 7 and now Hero 9 I have been constantly troubled by freezing issues usually after a few minutes into a run. When I stop during the journey (coffee, lunch, etc) I find that at some point the camera has frozen and the only way to restart is to remove the battery. On restarting the camera 'repairs the file' and then seems fine. I have tried using different memory cards and that seems to make no difference and it works fine in the car. Any ideas? I have lost lots of potentially good footage. GoPro support seems a bit hopeless.