Yea problem is when I’ve composited Memory Palace DVI output with a Vidiot output (with retrotink or without) in the V4EX, and then captured to a Ninja 2 in ProRes 422 1080i 59.94, in post when I deinterlace to 1080p 29.97, the stair steps only partially go away. In a shot that is only a single output, not composited with another video synth, I think the post deinterlace works better. Using retrotink I’m uncertain without some serious testing how much that improved a composted recording deinterlacing in post without serious testing I don’t really care to do. lol. 
PS memory palace has a Y mirror interlacing error currently, I posted about it on the forum recently, but no replies yet. Memory Palace V19 Firmware Release March 2020