Rasterio/GDAL need to make repeated queries for COG headers in new environments The more parallel and repetetive the workload, the higher the header GET costs are in Rasterio
Set up basic parameters for data collection, and check for existing collection in your workspace directory, if they were created earlier.
Please also note that while the Rasteret library code is licensed as Apache 2.0, the data files generated by the library are subject to the license mentioned in the NOTICE