Improve rendering speed for stacks (z, time, ...)

[MrMupfel]

Currently, when scrolling through an image stack, Vizarr loads the necessary image after selecting the right point in the stack with the control slider. This works well when you know to which point in the dataset you want to go.
However, when looking at images acquired via FIBSEM for example, there is usually a lot of scrolling back and forth involved to get a feeling for 3D structure.
Is there a way we could improve the scrolling experience here? Maybe preload the smallest resolution for all images in the stack - or at least until a certain cache limit is reached?

This is an example use case I am currently working on which will eventually enable interactive comparison of stacked images (FIBSEM, SBFSEM, ...) to 3D models generated after segmentation - faster scrolling would be nice 😄

Cheers,
Flo