DRAGON QUEST XI S: Echoes of an Elusive Age – Definitive Edition

DRAGON QUEST XI S: Echoes of an Elusive Age – Definitive Edition

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Leveling with Draconian Quests turned on
Hi guys. My party is about Lvl 85 to 90 and I earned levels by using the pep powers to get more XP and to summon the Metal Slimes. My problem is: I play with the Draconian Quests on, so the Metal Slimes don't give me any further XP. Is there an efficient way to earn XP in these last Levels without disbanding the draconian quests? Or do I have to defeat common malicious enemies, which still give me XP?
Thank you so much.
P.S. Answers in german and english :)