Image blinks when scroll from the first one backward to the last one

[christinachanhk]

When I scroll from the first image backward to the last one, sometime the slider will blink (please refer the video around 3-4 sec).
I am using preload with fixed(offset: 1) to have that issue. If I switch to preload all images, that will not blink.

P.S. Not sure if that related to the "loadImage()" and "releaseImage()" function.
P.P.S. I am using KingfisherSource

Thanks for the help.

RPReplay_Final1658486097.mov