P: Very slow sync speeds with a large import

Same issues here, high bandwith everything is ok, syncing takes up ALL of my bandwith, but 1 photo takes 1 hour to upload!!!! WHAT is going on here??

I am having the same issue. I have an extremely fast connection. Uploading 130,000 images. 3TB

Sorry to hear about your sync issue. Hans - how many images are we talking here? Any videos in the mix?

Same issue here. Used my Windows 10 laptop first, but after a week, yes 7 days of continues sync, I through the laptop in the corner.
After a week I took my Mac Book, reinstalled it and started the same process, and it is running 2 days now and it is slow. Netwerk connection is good.

Download 89.3Mbps upload 29.0

Received pakkage speed (activity monitor 10kb

adobe cloud doesn't have per client speed to 34mbps/sec. Some complain about 1.5-10mbps/sec so it will take 3x-30x as long. Your upload should take 3days and now it can take 30 days. If this is for business I can help you look at performance uploads so you can figure out this issue (hourly services). If you need faster cloud storage then I can help with cloud storage solutions. 

I'm having this issue too, with much less files. It's definitely not my internet connection. I wanted to test out Lightroom CC to see if it's worth it. So, I only added 5gb of photos into Lightroom CC, and the syncing is horribly slow. More than 3 hrs have passed and it's not even a quarter done yet. Meanwhile, I'm able to sync 200GB of photos to my OneDrive in just a few minutes with no issue.

Honestly, with how much Adobe charges for storage and Creative Cloud, and for Lightroom CC to only use it's own cloud storage, this is unacceptable. Either enable users to hook in their own faster cloud storage (OneDrive, DropBox, Google Drive), or fix your cloud storage.

Having the same issue.  Been trying to upload 1TB (35,000) photos for almost three weeks.  I still have 5521.  My upload speed is 34.4 mbs.  Working off of a 2017 5k iMac.  Now that you know my specs, what do you recommend?  From what I've read this seems to be an issue with the product itself.

Hi David, go to https://www.speedtest.net and select a server on the US west coast, and then tell us your download and upload speeds. It does sound like an internet speed limitation.

Having slow sync problems too! Trying to sync 400 photos for a full day and only 50 have synced. Would upping my internet upload speed with my provider help? Got in touch with adobe and they say there’s nothing wrong with my Lightroom cc. Does the age of my iMac have anything to do w it??? Help!!!

Chip, vote on the selective sync thread if you don't want garbage up there Lightroom CC: Selective Sync