: Use 7-Zip or WinRAR to handle large .zip files.
: If you have an existing installation, back up your saves located in Documents\Electronic Arts\The Sims 3\Saves . Step 2: Extract and Install Game Files
: In the Sims3.ini file (located in Game\Bin ), you can manually increase the MemoryUsageLimit from the default 2 to 4 (or 8 if you have 16GB+ RAM) to improve performance.
: Right-click The.Sims.3.Ultimate.Collection.zip and select Extract Here or extract it to a dedicated folder.