What is the point of the terminator enable pin of an RS485?
It's because you don't want terminating resistors on every node of your network. If you did all those resistors would be in parallel and the network's load would be too high.
Place terminating resistors at both ends of the bus only.
Ideally, in transmission lines the terminating resistors should match the line's characteristic impedance. Then a signal arriving at the line's end would be absorbed completely in the resistor, without reflections occurring.