In FIFA 23, for Origin, you can hover over your username, select Application Settings, then the Origin in-game header, and you'll see the option to put an fps counter in whichever corner you want. But for the EA desktop, you can not see FPS directly. Therefore, using an FPS counter could be important to test if there are some problems with your FIFA 23 FPS. For example, you can use the Fraps, MSI Afterburner, GeForce Experience in-game overlay, etc.