This was already answered by one of our experts Cansha.
20% of applicants get PPR within 2 months of their R10 completeness check.
40% get once they reach 4 month mark
Another 20% get within 6 months
And the rest 20 % depends on their case.
However, these days processing times are varying based on VO and status of eligibility. If eligibility is "review required" then it takes longer time to process those applications. If it is "met or recommend passed" then it takes considerably less time.
You can know your application status either by calling agent or by ordering gcms notes(shows you clear picture of your appn).
What is gcms?
Read this post by Cansha
https://www.canadavisa.com/canada-immigration-discussion-board/threads/june-2018-aor-join-here.563316/page-522