WMI seems to be involved with much of the system. If I refresh a window, the wmiprsvc.exe process starts. You can also search for WBEM on the net since the WMI seems to be part of it. Drivers and system configuration do seem to be involved.
There are a couple of pieces of software that might be useful. You can get them at this Microsoft site and download the entire suite or just the applications you need.
After you download, right click the .zip file and look at properties and click the unblock button on the bottom.
The utility that might be most useful to you would be Process Monitor. It keeps a running log of what the system is doing. Since you have such a high CPU usage, I would expect to see multiple entries for the same thing. From there, you could see what it is doing, or where it is doing it.
If you decide to go this way, there are tutorials on the site about using the utilities, and I have some experience. When starting the logging, it should not take more than a few seconds to gather enough info to see what is happening. But we can discuss that if you feel so inclined.
wmiprvse.exe is a legitimate Windows file. It's known to cause trouble, in connection to games, and it may also attract boogies = virus and malware. Speccy may be one cause, I do have good trust in Piriform, but one never knows...
I would uninstall Speccy. Though, the CPU usage you mention is not critical, as such. If constant, even in no active use, it may be something to attend to.