Is it worth to keep vertical image with 1.5x longer generation time ? (Patreon)

Right now, I'm looking for any option on how to optimize the post creation process and improve image quality at the same time.

And i wanna ask one thing, should i keep doing more vertical posts, even if it took 1.5 (50-60%) more time? (becase render resolution is higher, 2048 x 2720, instead of 2048 x 2048) And if you downloading the images you maybe noticed that ZIP files became larger because of it