well Im not sure why the old safe file works then.
But 1 thing that might have to do with it, i was at the garage and took an adrenaline pill. then i went into the garage to get a car, but i couldn't. Then I went out of the garage, but the view remained stuck on the garage, wherever I walked. i managed to walk into the garage again and when the adrenaline pill stopped working, i could get into a car, get out and view changed back to the character. it was some bug i guess? everything else seemed to work again, except for unique jumps maybe?