It's best to move your mods folder to the desktop for testing purposes, when you're having issues with mods and cc. This means mods and custom content will need to be gone through regularly. Note: New patches are sometimes released monthly. It's best to go through the Mods folder each time there is game patch update and get rid of outdated mods/cc to help keep the game running smooth. If you have a bugged game, it's best to create and play a new game. Meaning bug fixes may not be fixed in older saved games. Mods get disabled with each game patch and will need to be turned back on. A list of outdated mods/cc can be found at the official forum. The #1 reason for in-game issues is an outdated/broken mods/cc or a mod conflict. With the recent patch released mods and custom content may no longer work and may cause problems with your game, or make it unplayable.
Important Note On Game Updates, Mods and CC Game patches are usually released around 10am pacific time. ** Important Disclaimer About Mods and Custom Content The Sims 4 - Mods and Game Updates - From EA Help Why Move the Mods Folder to the Desktop?
Tips for improved load time when you have a lot of mods/cc Custom Content Not Loading/Appearing In-Game
Finding/Installing Custom Content Houses/Lots Custom Content and Mods (Install/Remove/Organize/Fix)