my quick take is the psychologist is not interpreting the results correctly if she thinks these scores point to weaknesses in non-crystallized info and learning concepts. Quite the contrary!! Concepts for him will be the easy part. Its my understanding that non-crystallized (fluid) intelligence is measured by block design (15), matrix reasoning (14), picture concepts (15) while Crystallized intelligence is measured by Vocabulary (17), Similarities (17) and Comprehension (10). Your DS was strong in ALL of these, resulting in the 128 and 129 index scores..
however, his processing speed being weakest MAY point to weakness in "executive function" skills (which can include ADHD, etc) but since its not super-low its just a suggestion. So her comment about sustained attention is not totally from left field. Also the two 17s and high GAI point to being gifted in some ways & could explain a lot of the boredom.
My DS7 has a similar profile and its very frustrating for him and us, so i totally understand
