Performance, stability and usability face recognition

Question

Hi
I have been testing out the face recognition feature in Lightroom CC and I have some questions/comments
My hardware setup:
CPU: i7-5820K
GPU: Geforce GTX 750 Ti, running Benq 3201 UHD display
RAM: 32 GB DDR4
Disk: 1 500 GB SSD for OS and SW, 1 240 GB SSD for Lightroom catalog, 1 6 TB disk with the photos
I run Windows 8.1 with the latest updates.
I have according to Lightroom 120.000 photos in lightroom, mainly RAW, but also quite many JPG. The photos are organized by year, month, camera on disk. A year as typically from 5.000 to 10.000 photos.
Performance
1) It takes days for Lightroom to go through the photos to do face recognition. That is ok, but according to Windows task manager Lightroom seldom use more than 10% CPU, there is little disk access and there is pleny of available RAM. What is the bottleneck?
2) If I try to handle all the photos together the pc starts lagging and everything goes very SLOW, but still no visable stress on the hardware - still about 10% CPU for Lightroom. It can take minutes to put photos to a named person. If I only take one year at the time the respons times are ok.
Stability
1) When I work with all the photos at once Task Manager says "Not Responding" a lot for the Lightroom entry.
2) The screen goes "white foggy" from time to time indicating that the pc/Lightroom has sever problems
3) The screen flickers sometimes when it is stressed out.
4) If I leave it at "All pictures" it is very often inpossible to use it again, I do not get contact with Lightroom, I have to terminate the Lightroom prosess and start again
5) Other applications works allright, but might lagg when Lightroom is very stressed
Usability
1) I thought face recognition would become better and better as it learned from more and more photos. It does not seem that way. It is quite often not helpful at all - you have to do a lot manually
2) It seems it does not use other photos for face recognition than current folder, that means that when I can not use the root folder due to the performance problems I have to go through the same process again and again
3) The algoritems does not seem to take time line into account, when trying to find who the person is. I think that is something that is important to to to make it more useful.
I have been waiting for face recognition in Lightroom for many years and so far I am not very pleased.
Anybody that have had nice expirience with face recognition so far?
Any workarounds?
What do the Lightroom engineers have to say about this?

Answer 1

I agree with all the observations above.  I have a 25,000 photo database, and am running a Dell Precision with 16gb ram.  After people tagging for a while, the screen starts to flicker back and forth between Lightroom and other open apps, or the desktop.  It won't respond until restart or put the computer to sleep & login again.
The face recognition is very poor in comparison to Picasa.  The more faces you identify, the more bizarre and random the suggestions for a match become.  All races, genders and with very few apparent common features.  I would prefer NOT to have thousands of suggested names to sort through.  If the face doesn't match within close parameters, just leave it in "unknown" without suggestions.
I like the way Picasa groups similar faces, then asks "Who is this?"
Auto-complete for people names is maddening.  If you enter a space (don't names have a space between first name & surname?), it apparently resets.  So if I type in John Martin, it wants to auto-complete as John Martin Smith. (John Martin & Martin Smith being two DIFFERENT individuals already identified).  I already have 10 men named David in my file.  As soon as I hit the space, (assuming no one has his last name as a first name), auto-complete DOESN'T work at all.  So my husband's name, (a very common first name) has to be typed in its entirety each time.  Picasa doesn't have a problem with spaces... 
I have a huge collection of magazine clippings and sewing patterns.  I would like a way to exclude certain folders from the face search.  I don't even want to see those faces.
I'm stunned by the huge number of non-human things identified as faces.  Once in a great while, I can see why... but I never had this problem in Picasa.
I LOVE, LOVE, LOVE Lightroom, but don't think this feature is up to snuff, at all, no way, no how.