Thank you for your question.
Though you should be informed that Test studio does not support headless browser test execution. There are certain limitations by Windows OS when tests contain real user simulation like real clicks, real typing, dialog handling, etc. Please note that these limitations concern any testing framework and is not limited to Test Studio only.
Please let me know if you would need any further information. In case you would need further assistance to find the most suitable approach for running the test suite in the night I would like to kindly ask you for additional details.
Thank you in advance for your understanding and cooperation!