The server decides
The PUBG: BATTLEGROUNDS server has the final say on every player's position.

Rubber banding is when you move forward and the game snaps you back a few steps. It happens when the PUBG: BATTLEGROUNDS server gets your data late or incomplete and corrects your position. GamesTC looks for a route with less loss and less fluctuation.
GamesTC Network
6 associated city(ies):
Position in sync
Less loss and fluctuation on the route, so the server doesn't have to correct your movement.
GamesTC Detailed Smart Route
Connection quick guide
The PUBG: BATTLEGROUNDS server decides where every player is. When your packets arrive late, out of order or not at all, it puts you back at the last position it knows. If the server itself is overloaded, everyone gets it and no route can fix that.
The PUBG: BATTLEGROUNDS server has the final say on every player's position.
Packets that arrive late or go missing make the server snap your position back.
If everyone is rubber banding at once, the server is the problem, not the route.
With less loss on the route, the server corrects your movement less often.
More predictable movement, without getting yanked back.
Smart Route keeps measuring the route while you are connected.