Ask it to create a small sample to reproduce the issue in isolation. If it can't reproduce the performance changes then it drops it.
That might work better. I haven't tried it with SQL but it worked with a few complex UI issues I had. It identified the actual issue after a few false starts.
That might work better. I haven't tried it with SQL but it worked with a few complex UI issues I had. It identified the actual issue after a few false starts.