When running Test Studio Dev tests in the Test Explorer these will be executed with the default settings. To apply different settings it will be necessary to add a test settings file for the project and set it to be used by the Test Explorer.
1. Right click on the solution and choose Add -> New Item...
2. Then choose Test Settings and click the Add button
3. The new settings file will appear in the solution explorer. Once you open it, select the Telerik Test Studio tab to find the settings you could modify.
4. To apply these settings file for the Test Explorer execution select the newly created settings file from Test -> Test Settings -> Select Test Settings File.