Just read Recursion instead.

The Macguffin at the heart of the book is pretty much the only thing that kept me going as it's an interesting take on multiverse hopping.

Unfortunately, the story that's wrapped around it is a pretty miserable middle age crisis melodrama, where a mediocre white guy gets to justify doing a bunch of crimes. Of the two named women in the book one is raped and the other just written out of the story. I don't recall a single non-white character being established.

It feels like a wasted opportunity as there is some interesting philosophy of identity and morality to be explored in this space but this is swept aside so that the supposedly super genius protagonist can take forever to work out what is made obvious to the reader from the start.

Can't wait for the movie.