The solution is stable but could be better. 

Telerik Test Studio supports multiple platforms such as Web applications, Desktop, and Silverlight. I used it in the Silverlight application, and I felt that it wasn't stable enough. A few tests would fail intermittently. It wasn't stable. I'd rate it an eight out of ten.

Telerik Test Studio had stability issues. Sometimes, it gets stuck and takes time to get sorted.

Once, some of the test cases failed. Sometimes, you'll notice false failures from Telerik Test Studio. Issues could arise from script scheduling. My team also found figuring out issues very challenging in the tool. You have to observe for a few days before calling Telerik support, and support will identify the problem.

The product is stable.

The solution is stable.