When I drag a film clip to the timeline, PDHanumanSvr.exe is instantly starting to read the file at a low pace (and low priority). Why? I don't have shadow files enabled.

From what I can tell, PDHanumanSvr.exe reads the file, creates a .txt file under the WaveForms folder and finally creates some registry keys. Now - assume that I import a full SD card from a cam, 64 GB, and put on the timeline. Then I realize that I don't have time for that project right now, so I go to another project instead. Now PDHanumanSvr.exe will spend the next 9 hours(!) reading the files from the project I am not working with!? Even at low priority, it will constantly move the disk heads away from the files I am working with.

And the question is still...why? Why is PDHanumanSvr.exe reading all the files, what is the end result, what does it give me, and why doesn't it stop when I close the project?

I have renamed PDHanumanSvr.exe so it can't be found by PowerDirector, and I can see no negative effect whatsoever. From what I can tell, I have not lost any functionality and no performance, at least not in the way I use PowerDirector. Can someone give me a reason to re-enable PDHanumanSvr.exe?