its a visual issue, you wont lose your progress, it doesn't load because your computer isn't strong enough i think (i have the same problem)
i have a 7900xtx and it is the same for me, not a hardware issue
What's your full specs?
I have an hd 5850, the only problem i have is a white screen that sometimes appears wuen starting a night, i just need to restart the night to resolve it
