Multiplayer loading help!

So i use hamachi to connect to my friends server, it downloads the terrain and when i'm in first person or w.e I see no floor/blocks i see like some cows and sheep then i just start falling and my fist turns black and every mob turns black, i am able to move but how do i fix this? :/

Can your computer run the game?

the chunks are not loading correctly... may be a graphics error or too much noise on your internetz.... or it could simpily be, that your computer sucks