Selecting All People VERY slow

When you go into the People section and open a single person, if you click on the first person and press Ctrl + A (I have just over 2000 Faces) it makes Lightroom stop responding (for over 10 minutes now and still waiting), I just want to add a Keyword for each person so I can search using Windows Explorer. I then noticed that after it had finished (15 minutes) that it had also selected the Similar faces (15000+) this is annoying as when I entered the people section the similar faces hadn't scanned and said 0 in the counter. so it would be nice to be able to select all the detected faces without similar ones being part of the selection in this case IMO.

I think more optimisation needs to be done when working with People as even tagging them can take a LOT of time to redetect similar faces each time you add some, it would be better to offer a refresh button if it can't be done smoothly as I was going through the list and skipping over the ones that were not the person and it makes going through the detections very time consuming, there is also not a Right click menu, I feel it would be better to have a list of most recent tags so you can do multiple people at once while going through them.