A family of Microsoft relational database management systems designed for ease of use.
Preliminary test using the SQL Server driver showed the same performance for me. I.e. I see little to no increase in Memory Usage in Task Manager and return a cartesian query recordset of over 9.6 million records from a remotely hosted SQL Server with what I consider to be a typical time lapse for a recordset that large.
I still need to test inserts and updates as well as straight selects, but there's still no confirmation of a reason some people experience this.
Maybe we should be looking at SQL Server versions as well? The one I'm using is SS 2019.