I forgot to mention that you also need to set the same HDRI in Painter and in your Unreal viewport otherwise the reflections will not be the same.
Gumroad link :
https://bleleux.gumroad.com/l/lHiVg
Here's some useful Links with more informations on how it works :
• How to Fix the Substance Painter Viewport ...
• How to use ACES for consistent colour mana...
00:00 - 7.4 workflow
00:40 - Old workflow
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