we want to use the plugin for our party newsletters, so we installed and it already runs. However we have a sending sending speed from ~1 email per minute, totalling at 61 mails per hour. Since we have a few thousand subscribers, this it not at all usable for us. As I can see, the delivery speed can be set in the settings section. Why is this set to 100 and what are the downsides of cranking it up to 10k?