@suize Try setting a container width maximum with the reader and setting it to fit width, both are at the top of the reader settings and the second is also on that sidebar menu. After turning mine off, it looks like things are blown up quite a bit compared to the raws. Forcing a limit on the width will shrink them back down towards normal and might help decrease the blurriness in the process. For webtoons, somewhere around 700-900 for the width seems to generally be the maximum to match raws. I use 1000 for general use, to keep pages from randomly being excessively big, and even with that I didn't really notice anything until after I played around with my settings to let the pages get bigger.