The WorkflowFirst Testing feature is to verify functionality of the application. It doesn't test the performance or stability of the application under stress. To check this kind of thing takes a different approach to testing that can be quite complex to set up. 

However, luckily because WorkflowFirst is web based there are plenty of third-party applications that can test a stressful load on a web server, simulating tens, hundreds or thousands of simultaneous users. 

A few examples of commercial products that can help test performance of your system under stress, none of which are tested or endorsed by RiaForm Technology, are listed below: 

 http://www.webperformanceinc.com/ 

 http://www.proxy-sniffer.com/ 

 http://www.nrgglobal.com/load-testing-tools/quality-assurance-and-load-testing-apploader.html 

 http://www.neotys.com/