Crazy Chunkloading

after join my private world, i got little laggs
i change the Renderdistance to max.
and than was Totaly laggy and i see Random changed Bioms
i Filmed it -> https://www.youtube.com/watch?v=vXHVGM-ZY_Q
normal Minecraft 1.8, without mods in a normal world without customize.
after reload it was back normal