The present invention relates to a method, related system, related congestion monitoring device and related media delivery personalization devices for controlling congestion in a media delivery network that includes a media delivery server and a plurality of client devices. The media delivery server is coupled over the media delivery network to each client device of the plurality of client devices. The media delivery server delivering media to a client device over a path between the media delivery server and the client device. The related method includes the steps of monitoring congestion in the media delivery network and subsequently adapting a level of personalization of the delivering of media to the client device based on the congestion monitored.