Why do my scanlines look awful?
Scanlines can be negatively affected by the method of vertical scaling that your video card uses, depending on the video mode you have selected for ZSNES. This can sometimes result in scanlines that are not of uniform darkness. The effect of this video scaling is most noticeable with Full scanlines, with 50% and 25% scanlines being less noticeable. To display the scanlines effect properly, you should use resolutions based on a multiple of 256×224 in windowed modes (e.g. 512×448) and 320×240 for fullscreen modes (e.g. 640×480).
