I was recently doing some building in creative on a default type seed, and I was using the new 'vbo's' setting. After a while, I decided to turn it off to compare the difference, and every chunk in the visible area was either distorted, floating, invisible, duplicated or randomly placed everywhere. If I moved my mouse the screen would just change how it all looked (a complete mess), and if I tried to move it would also do this, and create an xray too.
I only did this because my pc had gone from 150fps plus for a while, then kept going down to 20 or so while there was 70+ chunk updates, which meant it was like playing on a slideshow. Please fix this mojang, it could be a real pain.
I should of attached a screenshot of what it looked like at one point.