How do I throttle the bandwidth used for uploading to iCloud Photo Library (Beta)?

I have hundreds of gigabytes of photos that are now being sent to iCloud.

Unfortunately, Crashplan is also re-backing up the same hundreds of gigabytes of photos because the filenames changed when I switched from iPhoto to Photos.

I an running LittleSnitch and see the gigabytes flowing by for the "nsurlsessiond" and "cloudd" processes.

I have a pretty fat pipe from Comcast with about 130Mbps downlink and 30Mbps uplink and it's uploading 1.5MBps all day and night.

My family is complaining because they are getting crappy service... "The internet is slow" is all I hear.

The only throttle I can apply with iCloud Photo Library uploading is to "Pause for one day", which is useless.

Ideas?

Thanks,

Sanarchist