Running C v7.2. Took a gamble and put a 50 year old reel in, about 30m super-8. Loaded in PC, start of clip was excellent. Came out with much better colors and detail than the "professional" scan done by my parents years ago (expensive back then).
However, towards the end I see "jitter" in the bottom of the frame. It slowly creeps in, observable after 1 minute or so and at the end is very obvious. I put jitter between quotes, because if I step through it frame by frame, it is NOT random. It has a very distinct pattern that repeats. A frame is shifted up at the bottom about 1/3, then 4 of frames okay, then again about 1/4 up, then 4 frames okay, then 1/8 up... and so forth until it repeats after 52 frames if I counted correctly. I can DM you a link to a clip if interested. This must be something software/electronic related.