My visa office is Montreal. And unfortunately we have very little information about this particular office. I know two more members with June AOR and two with April AOR. The worrying or unfortunate thing is all 5 of us have been given the same status from IRCC agents that our eligibility is under review. I would have been less worried if it were only June AORs with this status but one of the April AOR guy had ordered GCMS notes and did not see a single comment on his application beyond 2nd May. And we are yet to see a single example of a PPR issued from Montreal office. We do have a very small sample set but still 5 cases with similar status after 2/4 months doesn't give a lot of confidence.
But as you said I'm hoping they will still meet their 180 days SLA. I'm planning to order GCMS notes in first week of September to have a false sense of "doing something". Doing nothing and waiting is quite difficult to do, although I know that is what is probably needed.