(Xbox One) Game Data Incomplete on Sims 4

This has been happening to me with Vampires and City Living for a few months now. I have tried uninstalling and reinstalling all of it, tried launching the game with and without WiFi, and nothing seems to work. (It seems that I can only play my expansion and stuff packs through an internet connection.) Very rarely it will load properly, and when it does, I haven’t done the process any different. It’s just hit or miss. It’s currently happening to me right now, and I am extremely aggravated. Unfortunately the Sims 4 is already a huge disappointment for a few reasons, but this one is plain ridiculous.