Paste settings are freezing

I am a headshot photographer.  I crop one headshot and then copy that shot and batch paste the other headshots.  I have been able to do this, as soon as I have uploaded my images into Lightroom, as the photos are syncing.  Recently I haven’t been able to do this.  I have to wait until all the images are totally synced to the Cloud.  If I don’t wait, the paste settings freeze (where the blue status bar stops half way and doesn’t move) and the paste setting have only affected a few images leaving the other images untouched.  I have to quit Lightroom to reset everything.  This is really frustrating and time consuming when I have a lot of team headshots to crop and edit.  Not sure why this has started happening recently?  Any ideas?