When the GeographicBufferer was replaced by the Bufferer (Version 15) there was a severe performance drop when buffering by non-ground units. Originally raised by @jdh on the forums, this performance issue continues to be a problem on the release of FME 2021.0, Bufferer version 17.
While the workaround is relatively easy by reprojecting the data before a bufferer, this seems like a backwards step compared to what the GeographicBufferer provided.
