...I've actually had it for awhile now, but I've been trying to fix it to no avail. It only appeared after I got Windows 10. I've already read that this doesn't seem to be happening to anyone else though. Anyways....
Behold:
I've tried validating the files, redownloading the game and updating my graphics drivers. None of them work. Of course it's not anything massively game-changing because the "red-lines" (as I've called them) only seem to appear in graphics-intensive environments like shadows and the entirety of Bazaar. But it's just so annoying that I'm getting fed up with it.
I don't suppose anyone would know how to fix my little-big-issue?