Alphabetizing Lenders/Financial Professionals After Distance Sorting

A financial services client has a vertical (“Lenders”) set up which brings in Financial Professionals from the KG. They want their lenders to appear in alphabetical order after sorting by distance from the user. If you take a look below, that does not seem to be happening despite setting up sort order rules (relevance, then distance, then lender last name) and assigning the appropriate fields as sortable.

Upon further investigation, it looks like identical addresses are showing meter differences in distance.
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Is there a solution to get identical addresses calculated to the same distances or is there a workaround to sort lenders alphabetically after sorting by distance?