Dead Space 3 In-game bug HELP!

HELPPPP MEEEEEEE

I got an issue with my dead space 3...

When I launch the game everything is alright!

Until I am going to play then I'm standing in the air... I can see the snowy stuff at my feet but that's it...

Also I don't see walls, Rocks, buildings, Monsters.. Actually I don't see anything.

I can even look to myself In the intro when he walks in the snow...

Please could you tell me how to fix this because I really want to play the game normally 🙂