Line Artifacts Displaying on Windows Web Prototyping

One of our employees has a PC and when he presents our prototypes from his web experience we get these weird lines showing up on all pages. If he presents from the PC native app he does not get these. It is isolated to PC only and web only. All our macs do not show it on either web or native app.

Example here:

2 posts were merged into an existing topic: Seeing strange lines all over my prototypes in play mode but not in editors mode