I have 2 android TVs now, TCL and Sony. Quit using the android boxes, both tvs have Google channels and play better than the boxes. I use CyberGhost VPN and have no issues. I only have a 100mps plan with 3bb and while running CyberGhost speed is usually 85 to 90mbs. Buffering often is not due to our internet but overloaded sites.
Nexflix never buffers any country, UK, USA, Canada, Australia, Japan gives you better choice movies.
All Australian TV channels work smoothly, great for Aussie AFL and other sports.
No wires much tidier and easier to use.
Don't use Kodi easier apps that work good.