https://myimmitracker.com/en/ca/trackers/consolidated-e-apr-tracker-express-entry-permanent-residency-application
This is a website to track a sample of applicants who recorded their cases. If you choose June 1 to June 30, and CEC, there are 150 total cases. Then select PPR as current status. there are 74 people who already got COPR.
So I estimate that about 50% to 55% people in CEC stream already got COPR. And if you sort the PPR date, there were 32 PPR in Jan, and 19 PPR in Feb (51 PPR in 59 days). If they can maintain this processing speed, it would take about 85 days to finish the rest of 76 applications.
In conclusion, based on my assumption, if you are in CEC stream and you are still waiting for COPR, the expected time to get COPR is about 42.5 days, and the worst case is about 85 days. (I know there are extremely bad cases, but let's not talk about that since the possibility is low.)