@snotbubble25 The lagging probably doesn't have anything to do with your card being unrecognized. Still, you can get it recognized and see how the game runs going forward. If you still see lag though, it would be best to start your own thread describing the issue. (And please post a dxdiag.) This thread is really just for unrecognized cards.
To get your card recognized, you'll need to edit a file called graphicscards.sgr, which is in the game's program files. Unless you changed the default install location in Origin, the full file path will be:
Program Files (x86)\Origin Games\The Sims 4\Game\Bin
(You want the file in the Bin folder, not Bin_LE, which is for the Legacy Edition.) Open graphicscards.sgr (Notepad works fine), and crtl-F to search for 2184. This will take you to these lines:
card 0x2184 "NVIDIA GeForce GTX 1660 (Turing)" $cardLevelUber $resolutionHigh
card 0x1F82 "NVIDIA GeForce GTX 1650 (Turing)" $cardLevelUber $resolutionHigh
card 0x1F91 "NVIDIA GeForce GTX 1650 (Turing)" $cardLevelUber $resolutionHigh
Create a new line underneath the one with 2184, and paste this:
card 0x1f95 "NVIDIA GeForce GTX 1650 ti (Turing)" $cardLevelUber $resolutionHigh
Save, quit, launch the game to the Main Menu, quit, and then see whether your card is now recognized. If it is, you should see a [Found: 1, Supported: 1] value in the config.log. If it doesn't work, let me know.