Borsig

Hey guys, im new on dayz and i lowered my graphics as it's super lag ingame, then in a minute, when im going inside of the house, suddenly all of things is gone, like you were on heaven, no things, clouds etc, then i tried to reconnect to an server, and i spawned on middle of the ocean, i tried opening a map, but dunno where i am, i waste my time swimming, still no luck, im still on water, btw it's dayz standalone..