It was confirmed by the product team of Microsoft that there is a system that runs a check for the current status/result of the test every 4 hours. For tests that ends automatically, this behavior is somewhat understandable. However, for tests that are ended by users, and a winner is picked manually, it shouldn't take that long to process. This is causing 2-3 hour delays when we just want to end the test early, and proceed to send the winner email out. This delay can impact the overall timing and effectiveness of email campaigns, potentially causing discrepancies between the planned schedule and actual delivery times.

For tests ended manually by users, we should reduce the processing time, from 4 hours down to at least 2, if not within 1 hour from the time it ended.