We would like to create a benchmark in which to determine if SP-Online is the issue, or to look elsewhere. We were thinking of uploading a specific file for testing in different locations on our SP-Online site. This way we know each time if attempting to open a 20MB file. Occasionally we have issues when some requests take longer than expected....however due to the various files and types on our site...we were thinking of placing a specific file to test with. So, results should be similar each time file is opened/requested from client.
Is there any other way or tool in which others have setup?