Hi Sander,
sorry, I only got notice of your answer just now. I’m pretty certain I looked at the thread in the last couple of days and it wasn’t there. Weird. Was it pending approval? Anyway…
Since your mesh is very uniform, I think we can rule the Large Triangles out.
Does the blurry texture appear only on the re-imported mesh?
And how does it look like if you do an fresh unwrap within RC on the resurfaced mesh?
That’s just to narrow down the error.
Or did you solve it in the meantime?