PopReference

Questions to narrow down problems: Are you useing any ENB or modified d3d9.dll file? What other mods do you use? ENBs would give me this problem and their are many BIG mods now. Other problems could be save game bloat, other programs running, or hardware limitations.

Are their specifice objects that you find pop in, or do youn mean just in general?

When an object shows up with a pink/purple colour it means the textures aren't loading. Same for black on bodies. It could be you've run out of Video Memory and can't load any more textures, or those texture files are saved improperly. *edit* I agree with Tok84