I don't know... I get tired from eating coconut flour products, perhaps because it is highly processed. And even coconut butter or coconut cream, I'm noticing I'm tired afterwards. Whereas a hunk of fresh coconut meat, don't feel tired at all.
I don't experience that after meat though.
Perhaps it is the food combination that is causing the tiredness? You mentioned paleo coconut bread... What are you eating that chunk of fatty meat with?