Hi Sheila,
you are right that batch downloading is currently slow for large number of stations and this is something we are currently discussing in the project.
While we are working on performance improvements and a better way to batch download information from OSCAR, please do not parallelize your downloads and keep the rate at ~3 seconds per download, as otherwise this leads to too much load in OSCAR and may lead to your IP being temporarily blocked.
We will keep the community informed about improvements in this realm!
best regards,
Timo