Serializer with PrimaryKeyRelatedField many=True produces lots of queries when is_valid is called

[Wasp]

I'm using Serializers to transform primary keys into model instances with
DRF by using the PrimaryKeyRelatedField.
However, when I run the is_valid() method on the serializers to get the
validated data for every primary key a query is produced by performing a
get on the provided queryset.
With large numbers this becomes very inefficient. Is there a way to trigger
a .filter() on the queryset or a better way of doing this? I know I can
just do a filter on the queryset myself but I like the structured way of
doing this via Serializers.

Thanks!