Converting virtual band into real bands and saving seems slow


I’ve been playing with some S-1 InSAR pairs and produced large products (10GB+) with some extra virtual bands (consisting of simple band-math). When I’ve converted the virtual bands into real ones the saving-operation seems to take a lot longer than expected.

For example, writing a product with 15 real bands after the conversion takes ~10 minutes at product-size of 13GB. If I assume (conservatively) that direct writing to disk happens at 100MB/s this operation seems to take several times longer than expected.