I have just purchased a Samsung Freestyle and it is rebooting Every few minutes when in use. I've tried all the usual trouble points but cannot find any causes. I'm seriously considering returning this device for a refund as it is not fit for purpose.
Same issue here of rebooting. Very frustrating as I really like the projector. I find it happens more when using the apps which are factory installed. In my case, the following apps experience it between approx 10 mins to 40 mins of streaming content in them: All4, Amazon Prime Video, Netflix, BBC iPlayer. It happens more when connected to my Sonos Speaker via Bluetooth. In my experience I could watch some channels/programs on Samsung TV app for an hour or more but others in that app would cause restarts regularly.