Tosca Load Streams have been deprecated as of October, 2019 and will be cease to operate in February, 2020.
To continue load testing using Tricentis Flood, we recommend using our natively supported load testing tools such as JMeter, Gatling, or Element. You can learn more about them in this guide, including how to get started.
Since its initial release in Tosca 11.2 in 2017, Tosca Load Streams never reached the level of adoption which would make it a high priority for future development both by the Flood team, and Tosca teams. As a result, we decided to discontinue support and development of this feature to focus on advancing our Analytics and real browser testing products.