Must be something huge, it's been uploading one item for some time now. Titanfall appears to be playable with an almost 400 ping. At the end of the match, I got a connection timed out error.
I did take some pictures today, but I'm pretty sure it would of been done uploading them by now. Also I took more then one picture, it's only uploading one.
Well I don't think Google Photos Backup in Windows is working, just says uploading 9 of 9 and never finishes. I paused it so I can play Titanfall.