Hello,
Thank you for your question.
I would like to suggest you to check Performance counter in Windows Print server and also you can login sing Printer GUI web url to see how much pages have been printed and Cartage related information.
Additionally, Please have a look on below Microsoft threads related to Printer performance.
https://learn.microsoft.com/en-us/answers/questions/159756/printer-server-performance-problem.html
https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/dn554243(v=ws.11)
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