HeathGCF: The latest example for me in the screenshot is buildings and structures that don't load properly, which has only started happening since the 1.4.2 patch, while overall stability seems worse than before. Longer loading times, more stuttering, and most battles are simply unplayable now because of lag.
I'm somewhat surprised, my experience was the opposite. 1.4.2 so far has been performing flawlessly, though my potatoputer couldn't handle the HD textures, and I may have lowered some settings that were higher when I played before.
I do notice slightly longer load times during conversation compared to 1.3.4, but nowhere near the level of the 1.0 release.
My suggestion, drop some settings. The texture load might happened because your GPU is dropping things on account of not enough working memory for the demanded load (at a guess, anyway). Might help.