I tried to remove the USB dongle for the mouse/keyboard today, and it resulted in a lot longer playing time before freeze. This freeze issue is definitely related to controller hookup!
I have had a weird experience 2 times... i let the frozen screen hang, and after a good while, the game resumes ?!?! Well, the controller connection is lost, even though the controller LEDs are still lit. If i turn off the controllers and turnthem back on again, they won't pair wih bluetooth.
But it means that i can maybe pull some log files - I'm just not experienced enough to know which logfile woud be relevant, and how to pull it. Maybe someone could help me out in this regard??