Problem with vertical pictures.

First of all, thanks for plugin.
It works great, I only have one problem. I have responsive theme. Auto height works, but it create a problem with vertical pictures. Since it resize picture to full width, my vertical picture is huge! Is there any way to set some max hight, and not to have my picture crop? In another words, can I set so my pictures scale to hight I set?
Thanks in advance

https://ww.wp.xz.cn/plugins/slideshow-gallery/