Crash Crash after 1-2 seconds of game.

[Azirahael]

Hello. New player.
Game looks good.

DL and fresh install.
fresh new game.
Loads fine, menu works fine.
Seems to fall apart after 1-2 seconds of actual game.
Based on what i can see, it's something loading in, and as soon as it loads in, then it crashes.
I can see the chunks loading in, and then it crashes.

Tried different graphics settings. Seems not to make any difference, except if you dumb down the settings it takes less seconds to crash.
Here are the logs:

 

[Azirahael]

Update.
Tried again after switching to game version 1 step back from most recent: alpha 20+314
Now it works but has like 5 FPS, and crashes after a few minutes.
Game looks good.
I'd really like to play.