That's what I would think also; but my longest wait was for Dominator as we were leaving since it was in the front. They weren't having any hiccups in operations either. I waited an hour for Dominator and an hour Volcano (which I expected). I never expected only 10-15 min wait for I-305. Like I said, maybe I'm wrong, while it does chew up people, it does slow down some because it's only 2 across compared to most B&M that are 4 across.
Except I305 has 16 rows of 2 (32 seats), and Dominator has 8 rows of 4 (32 seats), so that doesn't really matter. I think it's a combination of the ride's location, reridability, and capacity.
This so much. I305 has similar capacity to Dominator (they're super slow there),