The worst time I had of this was while I was in the Army. The instructional pace was so slow and basic that it was hard to stay on course.
The clue for that situation is to catch it in the first opportunity, and respond with more detail than the questioner is ready to handle.
If you advance the class beyond what the glacial pace is following, the instructor is thrown off schedule.
Do that once or twice, and they will never call on you again.
You’re so rational, Bob.