WooCommerce Advanced Settings offers entries for Custom Timeouts to skip delays.
These settings override Ecommerce Timeouts that are automatically set to skip delays. If your service is slow to respond you may enter numbers larger than 3 and 5 defaults.
Entering 7 and 9 will give Big Business 7 seconds to connect and 9 seconds to process. If these entries are blank the default setting of three seconds and five seconds are used.