Thanks everyone, I think I'll do a tester and see if it's working for my series or not... I redid a couple pages and I'm really liking the flow.
@wumblebumarts readability was totally my issue! I'm such a traditionalist, and so love the printed comic format, but it seems to make several of my pages a little clunky to read on Tapas, and giving away gags too early. Just adjusting the format for the platform seems to make it read much smoother.
@ilustrariane I totally get it, I'm desktop too and some chapters get a little frustrating when they're so long, sometimes it really does negatively affect the pacing. My pages are quite short, so making them vertical doesn't seem to make them much longer, I'll see how my readers respond. This is something I didn't even think of, so thanks!