Hello, it seems Steam will enforce the limits even if it actually skips the synchronization. Besides space quota, there is another restriction imposed by Steam on the total number of files. It is currently set to a total of 1000 files. Could you please check your remote storage directory if you hit the file limit? The path is C:\Program Files (x86)\Steam\userdata\<your_steam_id>\298610\remote. You can check total filecount in directory subtree by right clicking the directory and selecting 'Properties' - the dialog will have a line 'Contains: X Files, Y Folders'. Thank you.