Running replibyte results in command being killed

[pKorsholm]

I'm currently running replibyte trying to subset my database.

My config is something like:

source:
  connection_uri: $DB_URL
  database_subset:
    database: public
    table: cart
    strategy_name: random
    strategy_options:
      percent: 20
    passthrough_tables: 
      - country
      .... 
      <30 more tables> 
  transformers: 
    - database: public
      table: customer
      columns:
        - name: email
          transformer_name: email
    ... 
    <23 columns and 8 tables>    

This results in replibyte running out of memory (I'm guessing given the screenshot of the process from my activity montitor below, taken right before the process crashed)

Is there any way to reduce the memory consumption, the database is in total around 250mb (148mb if asking postgres with: SELECT pg_size_pretty( pg_database_size('dbname') )) and 51gb of memory taken up seems excessive.