I am having this problem now and is not something happening all the time and I can't really find out what's causing it to solve it...
Here is a picture of a model scanned with the lines: (raw scan)
And then without them, (fused scan but it didn't have the lines anyway)
I haven't changed anything, same setup, same computer, same all and I am really freaking out... Sometimes they are more noticeable than that.
Somebody have an idea?
I am scanning at 1920x1200 5fps