What is the best way to update category attributes from CSV?

Question

Magento

Magento 2, you need to write a module to import category attribute values ​​from a csv file. There are hundreds of entries.
I understand correctly that using repositories for this (doing a get, setting data and saving in a cycle) is wrong, because it is very slow? What approach should be used in this case? Take a resource model, get a table and update it?