@c_clare001 Also, take a screen shot of your graphic setting in Game Options. Make sure the Edge Smoothing is set on High.
And it probably would be good to post info about your graphics card, there are some players here good with hardware. Here is how you make a dxdiag:
https://help.ea.com/en/help/pc/how-to-gather-dxdiag-information/
Make sure your graphic drivers are updated.
I have Nvidia, but the advise for it could perhaps be applied to a Radeon/AMD control panel? Look for anti-aliasing options to be on and test your way. There may be global as well as particular application settings to chose from, make sure they match, so that global settings aren't overriding the particular ones. These settings may be restored to default when updating drivers, so you need to check them again whenever you do.
And is there any difference playing in Fullscreen/Windowed/Windowed Fullscreen?