Atc not updating on playground

This is so annoying. I know it is well known but it is aggravating. The selection for a position is available to choose but once the game loads there is a controller there. Sometimes it will take 10-20 minutes before finding an available position.
I have found the best way to get an updated available location is to spawn in as a pilot and click on the airports. This shows a more recent updated list of controllers.