Profile fields lang value db queries can cause query flood

When using many CPFs with language options (boolean, dropdown, etc.), these language values are retrieved from the DB on an individual basis by phpbb/profilefields/lang_helper.php

This means that the number of queries on viewtopic.php (and possibly other places) can skyrocket, as the number of queries increases by unique users on page * active cpf with lang options

The result will be something like this:
Page generated in 0.9048 seconds with 96 queries + 5 queries returning data from cache

With dozens of queries like:
SELECT option_id, lang_value FROM phpbb_profile_fields_lang WHERE field_id = 31 AND lang_id = 1 AND field_type = '4' ORDER BY option_id

This could and should be much more efficient.