Import hangs during Smart Preview build

[Jim Garrison]

LRC 11.3.1 Camera Raw 14.3

Windows 10 Pro X64 21H2 with all current updates

Asus Z97WS motherboard, Intel i7-4790K (not overclocked), 32GB, 8TB RAID-6 data storage (5TB free)

Since the update to 11 I've been experiencing difficulties if I try to import more than a couple of dozen files at a time.  LR becomes unresponsive during the import. Sometimes I can cancel the import by clicking the red X in the progress bar, but usually I have to kill the process with Task Manager and re-launch.

Some data points:

1. All the files have been copied from the source media, but not all have been added to the catalog
2. It makes no difference if I import directly from an SD card or first copy the files manually to a temp location on hard disk before importing
3. After restarting, I can "synchronize": the folder into which I imported to add the "missing" files to the catalog.
4. Sometimes I'll get a "preview missing" error message for one or more of the recently imported files.  I can manually regenerate the Smart Previews.

Is adobe aware of this problem, and is it being addressed?

[Jim Garrison]

Can I get a response on this?  It's becoming a serious issue. 

Here is some more info:

• According to Process Explorer, after LRC hangs during the import it is using about 0.20% CPU and doing about 1-2KB/sec (i.e. minimal) I/O occasionally, but zero I/O at least half the time. 
• Memory usage is not changing.
• All the incoming files have been moved from the temporary disk directory into the catalog directory
• Of a total of 490 raw image files, it got as far as 236 before hanging.

How do I get someone's attention for this bug?

[TheDigitalDog]

First thing to try is resetting your Lightroom preferences:
https://helpx.adobe.com/lightroom-classic/help/setting-preferences-lightroom.html

Quit Lightroom Classic.
MacOS: Press and hold the Shift + Option keys.
Windows: Press and hold the Shift + Alt keys.
While holding down the keys, launch Lightroom Classic.
When asked, select "Yes". 

Any difference? 

[Rob_Cullen]

I might ask- Why are you creating Smart Previews?

If your raid drive is permanently connected you do not need Smart Previews, and Standard previews will do just fine. (and 1:1 previews will automatically appear when needed).