Resolving the remaining queries took about an hour (!). It did 1-38 in 19 seconds, 1-39 in 41:46 min, and 1-40 in 01:07 h. Is this reproducible on your end?
I was just using pura and noticed that this might be due to a service being down (e.g., CIR). You can see if queries are taking a long time or failing if you set logging level to debug.
See https://github.com/sustainable-processes/pura/issues/9#issuecomment-1311721216