You might need to switch it to mirror mode on the iPad… that way it will be forced to show content full screen.
Right, I didn’t though about that option, although I think apps should be easily made full screen on external displays. But what you said works as a workaround! Thank you.
Regarding playing content off a hard drive, yep, even using the native player of Files it eats a 1% each 3 minutes, even with the low power mode on. This M2 chip is power hungry…