@crinrict It happens on every household I try to place Sulani, even after a fresh save. It has been a problem from the beginning. I thought that it was a part of the gameplay at first, except that my roommate does not have the same issue. We have all of the same packs, no Seasons and no mods. I've tried repairing the game and re-downloading all of my packs but those don't seem to have changed anything.
So I've included some screenshots from two different households from two different saves that show how the clouds get more prominent as I zoom out until it obscures the screen completely. It happens on every lot on every island. The last picture is of my sim swimming in the ocean and taking a picture of the island covered by the fog.
