I have the same problem as documented here: https://kriesi.at/support/topic/full-screen-slider-flicker-in-ie11/
My website is here: http://promedikapharma.sg
The full screen slider will cause the top of the next section to flicker whenever the it moves to the next slide. I pasted the code suggested in the solution article above, but it didn’t work for me, as now my slide does not go full screen but will background repeat instead.
Nevermind, I seem to be able to make the problem go away by using “cover” instead of “contain” on background-size.
.avia-msie-11 .avia-fullscreen-slider .avia-slideshow > ul > li{
background-size: cover !important;
}
.avia-msie-11 .avia-fullscreen-slider .avia-slideshow-inner{
transform: none !important;
}