GMAC has indicated that in their pilot of Section Selection, the order of sections did not significantly affect scores, so this should not affect standardization. More on that here:
https://www.manhattanprep.com/gmat/blog ... most-here/

It won't impact your test results very much (if at all), but it can make the process feel less stressful, so we recommend that you use it. Start taking your practice exams in your preferred order starting now: https://www.manhattanprep.com/gmat/blog ... r-only-10/