So when i zoom out from my character, about 1:1, lines start to appear which very unfortunate.

The lines keep jittering to different places around the neck/chin area when i keep zooming out. It seems like i have the same problem in Honk 2.0 so, is there a problem with the images? The model is about 600x800 pixels.

Anyone who may know the problem and a potential solution?

This happens to me too, I used to be able to fix this by making everything 500x500 pixels but that doesn't seem to work anymore, I've been unable to assemble new characters due to this problem. ;-;  My old characters still look/work fine as long as I don't try to resize them ever again.