These warnings can get verbose, especially if events from the map itself are missing. Put behind a cvar and enabled it by default in development configurations.
Remove dev parameters from retail configs, disable net_usesocketsforloopback by default now. This was a leftover from before we got dedicated servers working, and was thus required to get other people to connect to the listen server. This is no longer needed, it was causing a problem with authentication on the local server as the input address from the client would differ from what the master server would bake into the JWT token (localhost translates into an actual ip address on the master server side).
