Gallery Slideshow: Full - Slower Fade Transition

Site URL: https://everlastcreative.com/

Hey all,

I might be a bit optimistic, but I was wondering if there was any CSS code for slowing the gallery slideshow: fade transition effect to be a bit slower.

I find the current fade transition, glitchy and too abrupt. 

--Example-- Found on my home page.

Any help would be greatly appreciated.

Thanks in advance

Would love help with this too, 7.1 is a bit jerky. Using  Fullscreen Slideshow Reel. Tried this code from another post I found, but doesn't seem to be working. Here's my site, slideshow at the bottom of homepage: https://demo-ashland-template.squarespace.com/

gallery-fullscreen-slideshow-item-img{
    transition: opacity 2000ms ease-in-out !important;
    -webkit-transition: opacity 2000ms ease-in-out !important;
    -ms-transition: opacity 2000ms ease-in-out !important;
    -moz-transition: opacity 2000ms ease-in-out !important;
    -o-transition: opacity 2000ms ease-in-out !important;
}

//.gallery-fullscreen-slideshow[data-transition="fade"] 
.gallery-fullscreen-slideshow-item[data-active="true"] .gallery-fullscreen-slideshow-item-src{
    transition: opacity 2000ms ease-in-out !important;
    -webkit-transition: opacity 2000ms ease-in-out !important;
    -ms-transition: opacity 2000ms ease-in-out !important;
    -moz-transition: opacity 2000ms ease-in-out !important;
    -o-transition: opacity 2000ms ease-in-out !important;
}

Love to hear an answer for this issue.