Sorgelig wrote:i will investigate it.
worked flawlessly before i updated
I don't have the problems with your mentioned games. No lines visible...
But I had a fixed "line" with catmull custom scanlines (60%) in Magical Quest Starring Mickey Mouse (G) in the upper third intro screen while scrolling down.
After reloading while playing another game before and thinking about making a bug reoport its now gone and I never saw it yet again...
Then I saw a "line" while fading in and out in super nova (U)... but the second time now its also gone.
Maybe the experimental low latency "syncs / initializing" somewhere in the middle of the screen sometimes and stays there?
After loading the ROM again its gone or sync's /initializes at another position randomly? But I'm not sure yet.
Two beer or not two beer? - Shakesbeer.