The service is suspected to fix this:
https://forums.developer.nvidia.com/t/has-anyone-been-able-to-run-an-rtx-3060-laptop-gpu-at-more-than-80w-on-linux/192959/52
currently propably only for vendor-testing so it shouldn’t be installed and started by the regular package manager.
It obviously has some bugs but it’s starting on your system. If you like, you could try experimenting with it, checking nvidia-settings for the new power profile pane.