There is nothing wrong with the topic title. The problem is quite fully explained even in their initial post.
The 97 % means the report is a near complete report. It has nothing to do with smooth performance of the system.
97% means that the Disk is pretty furiously writing or reading data to or from the disk (likely the former), and using up approximately that amount of the disks total reported performance capability. This usually does affect the smooth performance of the system because it results in all other I/O requests having excessive wait times. It's exacerbated somewhat because the Telemetry Runner Process has high I/O priority, for whatever reason. I've never seen 100% disk usage on any system not correlate with decreased performance, myself.
Reducing the Amount of Telemetry information that is tracked could help alleviate the problem:
Settings->Privacy and Security, on the left, click "Feedback and Diagnostics".
On the right under "Diagnostics and usage data" you can change the setting to "Basic". This should help reduce the amount of information That Windows will track and report to Microsoft, and thus what it will need to save to disk while it prepares it's report to the mothership about how you use your computer.
Alternatively, The Telemetry capabilities can be shut off entirely, this can be done by disabling the "Diagnostics Tracking Service" Service.
