I use the Android TV integration for my Philips Android TV.
On the Remote 3:
When I press the Rewind or Fast forward button in for example YouTube it goes 10 seconds back or forward.
When I long press the Rewind or Fast forward button it goes continuously 10 seconds back or forward, at the start but also after a while.
On the original Philips remote:
When I long press of the back or forward button it goes first continuously with 10 seconds, but after a while it goes continuously faster. So this goes much faster!
Why is this functionality not (yet) implemented in the Android TV integration?