Can someone from EA can clarify this...

I have an EA FC 26 account and my son other. 
If i play my account in my PC it feels laggish, with input delay, despite the quality reports shows a optimal 98/100 rating.
If i play with my sons account on my PC it doesn´t feel laggish.
 We have the same settings.
Since the beginning the play from is account feels better in my PC. Can someone explain me why?