I have seen CEC applicants getting PR in 21 days and also seen other CEC applicants getting in more than 15 months as well.I think they are logical and reasonable. But I let you be the knowledgeable one to write more than a sentence.
https://www.canadavisa.com/canada-immigration-discussion-board/threads/ppr-in-21-days.572627/
https://www.canadavisa.com/canada-immigration-discussion-board/threads/eligibility-review-for-more-than-10-months-join-here.589689/#post-7305099
The saskatchewan_regina forum member is under 30 yrs of age and single
There is nothing like a country specific quota.
The preferred NOC was a topic earlier but not any longer under the EE.
Your application is not processed faster if you are single Vs you are applying as a family
Countries you have lived in or countries where you are from again varies. I have seen people from Middle East and Pakistan getting there PPR under 6 months while others from the same countries getting stuck for over a year, so one cannot generalize this as well