Connects then disconnects on launch

On launch, MP automatically attempts to connect using the latest connection parameters. If a controller is attached, then it starts downloading parameters only to disconnect half way through. This then requires that the parameters be downloaded again once a connection is manually initiated. This adds an annoying delay to the connection process. This behaviour has been present for as many versions of MP as I can remember and is still present on the current beta version. Ideally, automatic connection on launch would be a configurable parameter and when enabled, not drop out when almost complete.

Start by reproducing the launch-time automatic connection with a controller attached, then trace the automatic connection and parameter-download flow. Done means automatic connection is configurable and, when enabled, completes parameter downloading without disconnecting or requiring a manual reconnection.

Written by the indexing model from the issue text.