MeKLiN from tinychat/youtube here, this is to those who experience grey line issues: Set your desktop to 1440x1080, set your output resolution to 1440x1080, set your scaled resolution to 480x360, once your stream or cam or whatever output you are using is on, open the virtual cam driver. Double click the aspect ratio check box. These are the tricks I've learned using tinychat, and trying to make things easier for hours and hours as well as trying different resolutions and cam/desktop/desktop stream viewbox sizes for performance reasons.