Firestick

[Penhallow]

We have 2 firesticks , one occasionally shows "connection problem" and the screen will go blank for a second then the programme will re-appear , we have checked the other tv on the same channel at the same time and there is no problem both tv's are about 7 metres from the router, also this doesn't happen on every channel . We have thought of buying an Ethernet adaptor and going the direct route.  Thanks for any help .