I use Clip Studio Paint Pro, and I've been having troubles with the process of changing the resolution for different social media platforms.
I use vectors for most of my layers, but when changing resolutions, they become...offset. This leads to a lot of time spent fixing up each panel in the new dimensions. Sometimes I simply have to move them back into place, but other times I need to fill in gaps that appeared out of nowhere.
For example, I start with this in 1080x1080 px at 600 dpi

and when I change the resolution to a smaller size, it becomes like this (sorry for the super zoomed in quality)

I'd like to know what your methods are for quickly changing the dimensions of your comics without having to spend a whole lot of time fixing them up! I would really appreciate it!