Hey there! When it comes to maximizing your Paragon levels in Diablo, efficiency is key. Focus on running Greater Rifts at a difficulty level where you can clear them quickly but still get decent experience points. Make sure to prioritize leveling up your main stat (Strength, Dexterity, or Intelligence) depending on your character’s class for increased damage output.

Optimizing your gear is crucial for pushing higher Greater Rift levels. Farm for Ancient or Primal Ancient items with the best stats for your build. Augment these items with Caldesann’s Despair using high-level legendary gems to further boost your power.

As for defeating bosses, make sure to understand their mechanics and have the right skills and gear to counter them. Utilize crowd control abilities, positioning, and proper timing to take them down efficiently. Remember, teamwork and communication are key when tackling tough bosses in group play. Good luck on your Paragon grind!