@Ketchup
I'm surprised you cannot see how useful benchmarks are in a work setting. Isn't it completely obvious? Most of the problems in the world do not fit into the scenarios you presented and cannot be solved by the basic solutions you proposed.
For our problem, visual studio was compiling much slower than it should. It was also worse on some computers than others. Looking at the task manager and etc didn't show anything. So which one of your solutions would be applicable in this case? None of them.
After running Sandra, I found out that the drives had IO/s scores that were about 8 times lower than they should be. Sandra's ability to compare the performance of our drives to the performance scores of the same model drive from other users was super useful and allowed us the pinpoint the problem.
Now you recommended checking drive health and fragmentation in the case of slow drives. Is your solution applicable to us? No. SSD drives are automatically defragged once a month by Windows (drive fragmentation problems haven't been an issue for the average person in the last 5+ years). Multiple computers of differing ages and models are affected so drive health is not a common shared factor.
In a business setting you need to PROVE the issue or you will be ignored by the IT department. Having benchmark screenshots provides that proof - mere complaining will get ignored.