I've tried pairing my bluetooth headset to the Q8G/H8G Hisense Android TV and I get a kind of lag when I hear the audio. It is kinda laggy in the sense that there is some interference or something? It's really annoying as I'm trying to use them with the TV. Any advice?
In my experience cheap electronics have weak Bluetooth antennas and very poor range. You could try repositioning your devices or moving them closer together. You get what you pay for.