Well, I found the problem: MasterController Integration. I removed it after a tip from someone, and everything is fast again now.
prerrrrret Alright, then do a hard repair of the game. Make sure the EA App is closed and the EABackgroundService is NOT running in the Task Manager's background processes list. Open [install location]\The Sims 3\Game, here by default (but maybe you moved it):
C:\Program Files\EA Games\The Sims 3\Game
Delete the Bin folder and restart your computer. Then open the EA App and click Sims 3 > Manage > Repair. This will replace everything that was in Bin with default copies.
Start the game once to make sure it's working, without changing anything else. Try the Smooth Patch again if you like; I don't actually know whether it still works on Windows 10 in general. (It works on my install, but that's hardly conclusive.) If it doesn't work, do the same hard repair as above, and try the Settings Setter instead; this should work where the Smooth Patch does not.
Okay, no idea what I did, but Smooth Patch is working again...
I take it back, I thought for a moment that it worked... I think I'm giving up, nothing works, even Simssetter doesn't work... I don't know anymore
