Hi Matt,
Here's how I do it:
Students -> Assessment -> Summative Tracking
From there, choose Export -> All Student Marks
Change your filters at the top to the appropriate year group and assessments (For example, we use an ad-hoc assessment for our termly data drops)
Then download the Excel file.
This sometimes times out upon download which is irritating, but times out less often than the Export => Bulk Export Student Marks feature