Thank you so much for the procedure, @csimeon .
I still had to go through some of the (outdated) tutorials on Hugin website and some videotutorials to get the hang of it, but with the settings you mentioned I was good to go and didn’t even need to set any control points. I don’t see any seams whatsoever, tho that could be because my environment texture is a landscape instead.
I also read your thread about the interior design linked above and that was interesting to see how you come up with various possible solutions to the seams problem and how you worked it out.
Well, I guess there must be more people interested in this and there will be more. 1. Hugin UI isn’t that easy to figure out (the basic wizard makes it even more confusing IMHO). 2. you get faster rendering times in Eevee which is always nice, 3. you get rid entirely of the fireflies or grain induced by engines like Cycles and maybe 4. I suppose you can get a different aesthetics than you would in Cycles. I for instance am a Blender Internal user and never quite made the leap to Cycles because I’m not after that kind of realism but Eevee does get me what I want and I’m happy with it, and it’s cool to be able to make environment maps with it.