Glad you had an enjoyable visit!
If you thought Big One was rough, I dread to think what you thought of Infusion…
With the Big One, though; I’m not sure if any of the BPB regulars would agree, but having done it on two separate visits (1 ride in August 2018, 2 rides in August 2019), I’d say it seems to be quite a temperamental coaster. It blows hot and cold, both in terms of roughness and in terms of speed. On the two visits I’ve done it on, I’ve certainly had two very different experiences.
The first time I rode it in August 2018, it was quite a cold, overcast day, and the ride was, to put it frankly, not running very well at all. Excruciatingly rough, and crawling over the elements, with very little speed to speak of after the first drop; that experience would have had it as one of my least favourite coasters at BPB (from memory, I think it was my 8th favourite coaster at BPB based on the initial 2018 visit, and I ranked only Infusion and Steeplechase lower?).
The second time I rode it in August 2019 was quite a different story, however. This was a much hotter day, nearing 30 degrees at points, and I had 2 rides on the coaster, one towards the front and one towards the back. It was running much better this day; while I still certainly wouldn’t have said it was comfortable or smooth by any means, the ride didn’t seem quite as rough as it did the first time, and it ran much faster, with a fair bit of intent through much of the course. Sure, the Big One isn’t the most relentlessly paced or thrilling coaster aside from the first drop, by virtue of its layout, but it was running fairly fast and packed reasonably good pace compared to my last ride!
I should clarify that I haven’t done it post-retrack, however (my last BPB visit was in 2019), so it may differ a bit now.