Hi @jeffv ,
A few common reasons for slow In-DB data movement is that your machine might not have the necessary technical requirements for Alteryx or you might be using the wrong driver. I've linked our technical specifications here for your review and would recommend making sure you have a 64bit driver installed and set up.
Another thing to consider is that narrowing down your query will always help speed up the Data Stream Out tool, so doing as much filtering in the IN-DB tools before the data stream out could help. In most cases a unfiltered Data Stream Out will take the same amount of time as a standard Input Tool hooked up to a database.
Program Manager - Community Platform, Alteryx