Optimize active record datatables queries -- 2

Hello, I'm using this gem : [login to view URL] to generate my datatables, but queries are not optimized, for example : I have a list with evaluations, each evaluation has 50+ questions inside then in my datatables I list evaluations, but any time I filter or load list this loads all questions inside each evaluations and its very slow when I only need evaluations data I need to load only relevant data to speed up the loading times in many datatables. This is the query : def get_raw_records [login to view URL]( :evaluation => [:assignature,:level, :evaluation_type]) .references( :evaluation => [:assignature,:level,:evaluation_type] ).distinct end Instrument belongs_to Evaluation Evaluation has_many questions console shows : "."id" = $1 LIMIT 1 [["id", 959]] Question Load (0.3ms) SELECT "questions".* FROM "questions" WHERE "questions"."id" = $1 LIMIT 1 [["id", 934]] Question Load (0.3ms) SELECT "questions".* FROM "questions" WHERE "questions"."id" = $1 LIMIT 1 [["id", 950]] (1000000 times the same)... Thanks