Thanks. Original took 8 hours (0.7,AA7), due to V3 cloud and soft shadows and smooth reflections, and perhaps also because the mist extended under water half a meter. I should have avoided that.
Some explanatory notes for those interested: island mask painted in PS 16-bit, raised 20m, added big fake stones after a compute normal and XYZ, then some inward displacement by PF, and some more fake stones with max altitude. Wall and stairs and building made yesterday in LW. Water lilies procedural, masked by some paintted shader patches. My (shared) grass and 1 type of shrub, and the Italian cypress. Hole in cloud for 'spotlight' on island burned in clouds by circular image mask and camera poiting at the sun.
Statue from Benjamin Bardou's scan.