Sadly, ION got slower when Automatic Train Protection (ATP) was enabled, and it seems they're resolved to just living with it instead of fixing it. Southbound trains slow to a crawl way too early in Waterloo Park before getting to the Erb/Caroline intersection, and again slow to a crawl well ahead of getting to the Hayward S. Yes, the speed limits do drop ahead of these road transitions, but still, the trains were much quicker through them when the drivers were doing Line Of Sight (LOS) before ATP was enabled. I'm convinced the signaling is glitchy at these locations.