I think you lose like 20% for every 5 wear above 30. What I have found works best at 57 MIN is to first use Deep Breath > Impulsive Appraisal > Instinctual Appraisal if Discerning Eye procs or another Impulsive. At that point if you're going for EXP turn-ins in Mor Dhona then stop there because you should be around 400 rarity. If not you can do one more and not go above 30 Wear. The more skills you use the less you can collect for a higher rarity.