It does not seem responders have read the question, OP stated that setting higher shutter speed was ignored by camera. Answers I saw recommended higher shutter speed, better gear, etc. Wish I could help, maybe someone will read more thoroughly and have an answer. Good luck with your camera!

I have scanned numerous slides with an Epson V-500 with good results. However, negatives are a different story. If your film is very flat, it works fine. Some of my film, however, is curled side to side, not lengthwise. Even with anti- Newton ring glass taped into the film holder, I couldn't keep it flat enough for a decent scan. I bought a Plustek 7600i-SE and am very pleased with the results. It may be a bit tedious, as it only scans single, 35mm frames and has no auto-advance, but it scans well, and the ladder-like holders keep film flat. Why Epson doesn't make a better holder is anyone's guess. Good luck with your scanning! Attached scans done with Plustek