My HTTPCaller returned a JSON response body, and now I'm using JSONFragmenter to grab some returned records to use in authoring a workspace. I started fragmenting 42 minutes ago and it's still running. Really just wanted to return ten records or so.
I suppose the slowness is partly due to caching (while authoring) with retention of the response_body over a few thousand records. FME Workbench is using quite a bit of CPU and memory, and is storing to disk.