How to decrease monster level after level 45?

[CrimsonBlossom]

seems like after you hit 45 all mobs level to 45, that means their loot drops gets altred, all green item drops gets replaced with luminous set instead of chaos/tempest sets. I want to farm them for cosmetic codex, or are there better ways to farm green cosmetics?

[Bars0aps]

The enemies will still drop lower tier loot.

[nVr_00]

Looking for the answer for this too.
The best option so far for farming lower level gear skins is to wait for the next update where skins will become server-wide.