@graceymanors Wait, what? That is so strange. I mean, your computer doesn't even have an integrated graphics chip for Windows to try to use instead of the Nvidia card. Although now that I think about it... maybe the setting is more about power saving or performance, and not the cards listed themselves? I don't know; this is something I'll end up asking the real expert.
It's wonderful that the setting fixed the white lines for you, regardless of the explanation. I wouldn't have thought to recommend that for a computer already using the correct card, but I'm really glad you decided to experiment. And yes, it's definitely helpful that you posted this, whether it helps everyone with the issue or only a few.
Tagging @SunflowerSimmies and @Bts152, so you both see the above post. Please let us know whether it makes a difference.