Why does my game lag after updating the computer to windows 11

@etaaa_5  There are a number of reasons why installing a new OS might cause Sims 4 to lag, but the timing could be a coincidence as well.  Just as a test, please start a new save and let me know whether it lags.  Please continue to test with no mods or custom content present.

Please also run a dxdiag and attach it to a post.

https://help.ea.com/en-us/help/pc/how-to-gather-dxdiag-information/