I'd recommend reading through the comments on https://community.tableau.com/thread/201663 to get some guidance on constructing a scatter plot from a big data set. Keep in mind that if you're trying to display all 10 Million data points at once there will be a limit based on how big the viz is, how much screen real estate you can spare, etc. Perhaps a scatter plot may not be the most impactful way of conveying the story this data tells? Who knows. The "max" that Tableau can handle is well above what you're throwing at it though, so fear not!