A user has reported that DeploymentServerLauncher.exe will continue to poll for devices even if no iOS devices are connected. I am under the impression that this is so that Windows can poll for iOS devices, to allow for logging. The argument for this being a bug is the CPU usage and that it continues to run even if the user does not plan to do anything with iOS.
This did not occur in 4.21.2
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-73418 in the post.