Most of the old settings are at least easily reached if you can remember their names such as ncpa.cpl for the settings you mention but when you write “control printers” you get sent into the new Settings view now. Instead you gotta go to the control panel and change view from category to small or large icons to finally right click Devices and Printers and choose “open in a new window” to get there. If you left click it you get sent to the new Settings view.

I hope you find out that it’s a not very necessary service that is the culprit, so that you can simply skip it. :)

Is it your cpu or your ram that hits the roof? Is it the host OS/Portainer or the services you run on it?
Here’s how to check container usage in Portainer: https://docs.portainer.io/user/docker/containers/stats