Issues with pets and other things

Hello i was just casually playing my game when sudendly my dog turned blue and i wanted to take him to the vet but it said that he's dying and i couldnt take him to the vet...but he was just fine to me and he's not old and he was in the house the whole time so why did he turned blue like he was cold or something? It wants that cold i do have the season pack,but like i said he was in the house the whole time.This happend when the new pack was added.And its not just this my pictures are black,when i hang the laundy and then leave the game i can't take it off it buged and my sims sometimes also lagged and i need to reset them with UI cheats thats the only thing thats saving me from destroying my PC.I did not have these problem before its now with the new update and pack.I dont know what to do.If someone is also having these problems and has a fix please help. Thanks.