I'd like to offer assistance regarding the issue of "slow record fetching on the Redshift environment".
We noticed specific performance issues with version 6.1.0.40, which led to its removal from the official support.quest site for download. As a result, the version is no longer accessible. However, we promptly released hotfix version 6.1.2 to address these performance concerns.
After conducting quick testing on the latest GA version (Toad Data Point 6.2.0.2322), I can confirm that the previously mentioned performance issues are not present:
Additionally, I took a look at the query execution speed through the mentioned competitor tool and obtained the following results:
I suggest considering an upgrade to the latest GA version (6.2), testing query performance, and sharing the results with us.