I have seen the Potter movies but not read the books. They, too, were a bit confusing at times but entertaining enough. Crimes of Grindelwald's biggest flaw is its inability to include the casual viewer in the story telling but this can be forgiven to a degree given the way this universe tends to be a bit convoluted.

Visually, it is pretty sound and the performances are good but the plot does feel a bit thin as far as I could tell.

My Son is a big Potter fan and has read the books several times. For him, this movie was good but less so than the first.

Somewhat hard to critique but I didn't hate it.