How are you connected, wired, wireless, home plugs?
Rubber banding is the host server [peer to peer or dedicated] and the client [your PS4] catching up with each other within the game environment. Unless everyone is complaining about the problem in-game, that would normally point to drops in your inbound or outbound connection. Perhaps buffer bloat in your router, or on an external hop somewhere.
Remember that your 25ms ping response is not necessarily indicative of the in game latency, depending on the host server location.
Are you playing with people on your friends list from another country. If so, are they inviting you into their game?
Have you spoken to Sky about it? If it's their router they should be able to check for buffer bloat, and or QOS settings. Mentioning buffer bloat might get your call elevated to someone who knows what they're talking about. Might...
Use the speed tester on this site (here
) and afterwards go to the detailed results page to get an indication of your connection quality [up and down].