I have more than 70000 cards in my collection and there is quite a significant share that requires a lot more effort to recall than others. They hamper my rhythm. So yes…
Look the at review times of cards with high ease and no lapses. Take the average there as your target
I have generally held it to be a rule that at the very least: each card during review should not take more time than the maximum review time ever taken before from past passes.
For example, if the maximum for a card was 12 seconds, then an elapsed time of the front and back side of card shown of =<12 is considered to be good.
I don’t know if there is a code that can help achieve this. I think an add-on would enable this to happen.
Otherwise, the problem with just looking at cards with high ease is that I know that the cards in question are already difficult ones, so for them to achieve the same review time as easier ones is a bit difficult.