Re: Windowed mode is low quality

In windowed mode it uses Windows settings It doesn't really matter what is specified in the game.

It seems that you should run it fullscreen and turn the graphics down a bit so it doesn't lag so much. but still looks OK.

If you want further advice please post a DxDiag. https://help.ea.com/en-us/help/pc/how-to-gather-dxdiag-information/
You can attach the txt file directly to your answer.