Per [this article](https://www.intermix.io/blog/improve-redshift-copy-performance/), performance may be improved by adding `COMPUPDATE OFF STATUPDATE OFF` to COPY queries. Note that PipelineWise takes this approach in their [target-redshift implementation](https://github.com/transferwise/pipelinewise-target-redshift/blob/12f79884f4d5947e7c1647b87a555bfeff625771/target_redshift/db_sync.py#L443)