How to make a slider gallery that NEVER crops images?

I’m attempting to make a full-width slider gallery, that never crops the images, regardless if it is full screen on a 4K 16x9 monitor, or a small squarish browser window for the folks who never use fullscreen on their little laptop.

Any suggestions? The images are everything from wide panoramas to vertical portraits, which I know makes things really hard. I know I could give in and do a grid or slideshow, but I really like the look of the slider gallery.

No matter what I’ve tried while resizing the gallery and section, sooner or later portions of the images get cropped, especially on a really large screen. It almost seems like a bug with the gallery.

Yes, my thumbnail resize is set to “fit”. I’m using Studio, and the pro gallery app.

Here is an example, it looks great on some screens, but the top and bottom of the image gets cropped, especially on very wide or large screens.