+1 too. just a note on this. Using a 20 tiles vrt with ecw files, for a total size of 120 Go, on 1.8 , raster icon generation takes ages. On 1.9, it was almost instantaneous (with raster icon ON). Since only big tiled vrt seem to slow down, and since having icon remains pretty helpful in legend, I just created pyramids overview, only for smaller pyramids (16 , 32). It solves the raster icon generation issue since only pyramids are used to generate icons. Hope that can help someone who needs to keep raster icon generation On. Régis
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