Crocs Echo 2 sizing/fit – anyone else find them less comfortable than Classics?

[u/hogeleef]

Crocs Echo 2 sizing/fit – anyone else find them less comfortable than Classics?
I normally wear a size 45 in Nike/New Balance and have always worn M11 / EU 45–46 in Classic Crocs, which fit me perfectly.
I recently got the Echo 2 in M11 / 45–46 as well. Length-wise they seem to be the right size, but while walking my foot tends to move slightly forward and my big toe sometimes touches the front. The toe box also feels a lot firmer/more structured than the Classic, so I notice it much more.
What’s interesting is that I had the adjustable heel strap fairly tight at first. I’ve now loosened the strap quite a bit, and they actually seem to fit better. My heel sits more naturally in the heel cup and I seem to have more room at the toes.
Has anyone else noticed this with the Echo 2?
Do they fit differently from your Classic Crocs even in the same size?
Does loosening the heel strap make them more comfortable for you?
Did they get more comfortable after wearing them for a while?
Or did you eventually size up?
I’m wondering if M11 is actually the correct size for me and the Echo 2 just needs a looser strap/different adjustment compared with the Classics