I'm using the Realface model for the first time. In the Preview with A>B it shows just a blurrier version of A. Previews with other models (original model and Iae trained with the same dataset) look normal.
I got 24h and 57000 Iterations of training.
That is strange, and not something I have seen (or seen reported) with the RealFace model, although it has been a while since I have used it.
Does B>A look like it should? If it does, then I am really not sure what advice I can give beyond 'try a different model'. If it doesn't look like it should, then the most likely explanation is that you have pointed both sides at the same training folder (although that seems unlikely)