Massive in game lag

The game lags badly in online modes. This is not a regular occurrence. I can have a whole day of smooth gameplay and fun, then the next day any FUT or online game mode feels like I am playing in sand. The whole game feels heavy and laggy, and it stutters at intervals.

One second it is fine, the next it is lagging and dropping performance, then it suddenly speeds up again. It is extremely annoying. I keep saying "one more game" after switching from 5G WiFi to fibre, and it is still the same.

When I leave Ultimate Team and go to normal Kick Off, it is snappy and responsive.

I have quit 5 or 6 games today because it feels different every time I try. It is really frustrating. This is asides the other nonsense where, I'd win a match, then at the end of the match, instead of seeing win, I get EA servers unable to be reached and I'm still online, it just takes me to home page and I enter back unlike the unable to connect error

My PC specs:

RTX 4060

32GB DDR5 5200MHz

Gen 4 SSD

240Hz monitor

I play on medium settings, sometimes optimized by Nvidia. These issues are really killing the experience and making it a huge turn off.