I have recently installed Opera for the first time. When I try to watch an online video in fullscreen mode, the video goes to a greenscreen with the video in the top left corner and the video stops playing. Here is a screenshot:

I have tried several websites and this always occurs. I have got adblocker turned on but I have got data savings turned off. I have tried turning these on and off and have tried using previous versions of the browser but still have the problem.

I am using a Sunvell Q Android TV Box:

Q-Box TV Box technical specifications:

CPU –  Amlogic S905 quad core ARM Cortex-A53 @ up to 2.0GHz
GPU – Penta-core Mali-450MP Up to 750 MHz
Memory – 2GB DDR3
OS – Android 5.1.1
Storage – 16GB eMMC flash + SD card (up to 32GB)
Video Output – HDMI 2.0 up to 4K @60 Hz with HDMI CEC support
Audio – HDMI, optical S/PDIF
Connectivity – Gigabit Ethernet, 802.11 b/g/n/ 2.4G/5G Dual-Band Wi-Fi  and Bluetooth 4.0
Interfaces – 2x USB 2.0 host ports, HDMI 2.0, S/PDIF port, AV port, DC jack, micro SD card slot
Misc – Power button, IR receiver
Power Supply –  5V/2A
Dimensions – 13 x 13 x 25 cm