Why Does the Match Phase in Zingg Take the Same Time for 10 and 2000+ Records?

When we are working with Zingg, the match phase always takes around 8 mins whether I have 10 records in source data or 2000. I trained a module and wanted to check for the new data how much time it takes in the match phase so I added only 10 records and in the second scenario I added 2000+ records. In both cases it took about 7-8 minutes in the match phase. I'm running a Zingg instance on my local system with 14GB allocated to WSL. Can you explain the reason for this please