I agree that cables don't seem to be a factor. It'd be curious to hear from anybody else with either of those games and a 1070 or 970 - both to find out if the vertical hold problem can be reproduced with composite video connections that are then transcoded to component and if the problem appears using s-video or component video connections.

Another curious thought: does the 1070's composite video monitor output exhibit the rolling as well, or is it just the transcoded component output? That could be a useful bit of diagnostic information.