NServiceBus/NServiceBus — pull request #1397 by joeschick (2013-08-06 16:16:35+00:00)
Title: Made visibility timeout for messages the same as the configured value

It's better to use the configured invisible time rather than multiplying it by the batch size for the following reasons:

1) Multiplying by the batch size makes it impossible to set a specific invisible time without changing the batch size.
2) Using the configured invisible time is more intuitive.