We just went through last week. Arrival was a breeze. You take a very quick, and short, monorail to the main terminal. Let's say 10 minutes. Then it's 5 minutes to baggage claim.
When you're checking in to head home, you're looking at some of the longest security lines you've seen in awhile. But they're organized and efficient. We were daunted when we saw the line but we were through it in about 10 minutes. Way way way faster than anything at Pearson.