What colour is the LED? Red indicates IR (infra red) Green indicates RF (radio frequency) If it is operating your V6 box via IR, then this requires a line of sight between the remote and V6 box and can appear to be slow in response, a simple solution would be to pair your V6 remote so that it operated in RF mode.
Go to Home > Help & Settings > Settings > Devices > Remote Control Pairing
Press and hold the Info button for 7 seconds until the light at the top of the remote goes solid green then flashes green twice
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