Forum:Sims 3 Lagging In Distance

Whenever I move the camera to view the distance, whether my Sims are in the city, country, etc., my game begins to lag massively.

I do use mods and custom content, however, I have run them through Delphy's Dashboard and the like, yet no issues. My saves have been scanned for problems/corruption, but they were fine too. I also have all 11 expansions installed, plus 1 stuff pack, yet they have not been an issue either.

It never used to do this before and I'm quite confused as to what the problem could be. It would be wonderful if anyone has any suggestions as to how to fix it, or at the very least, combat it.

Thank you!