https://helpx.adobe.com/creative-cloud/help/set-sync-options.html
Pause and resume file sync
If you have bandwidth issues, you can pause the automatic syncing of your files and resume at a better time.
Open the Creative Cloud desktop app. (Select the icon in your Windows taskbar or the macOS menu bar.)
Go to Cloud activity icon in the upper right, and then select the gear icon to open preferences
Does your screen look different? See instructions for the earlier version of the Creative Cloud desktop app.
To pause or resume the syncing of files, select Pause syncing or Resume syncing, respectively.