Okay, I've only seen a few people make mention of this, so I guess it's not a common issue, but ever since 1.6 dropped, my terrain has started looking like this: i.imgur.com/v6UQvkf.jpg
I don't recall the terrain ever looking that gross before the update.
In addition to that terrain issue, I've also been noticing some really bad texture pop-in, it appears as though LOD kicks in roughly 30 meters in front of me. It's very noticeable when looking at trees or complex objects with AO. It really sticks out.