Just a snapshot of my trip. YMMV.
Arrived at Pearson Term 1 from Vienna at approx 1.20pm on Mon 23rd May. We were informed that they would be using metering from the plane. Passengers with connections and business class were allowed to deplane, so I got to leave. Arrived at the customs/immig hall and there was not much of a line. No one ahead of us in Nexus kiosks. Printed our receipt, went down to the baggage hall and bag was already on the belt. Found some bags already offloaded off the belt. Picked up my two bags and informed other passengers that some of the bags were sitting on the floor at the back. Green sticker on my passport so left the airport. From plane to outside in less than 30 mins.
I will be travelling again this weekend and will provide another report.