FUT in game lag

I'd just go straight. 

The game lags silly in online modes. This is not a regular occurrence, I can have a whole day of smooth gameplay, have fun, then the next day, Any FUT or online game mode it feels like I'm playing in sand, the whole game feels heavy and laggy, it stutters at intervals. This second it's fine, the very next it's lagging and dropping performance, the the next it speeds up. It is extremely annoying and silly as I maybe I keep saying okay one more game after switching from 5g wifi to Fibre and it's still the same. 

Now leave ultimate team, go to normal kick off, it's so snappy and responsive.

I've quitted 5-6 games today as I felt every phase of the day could have been different. It is really annoying. 

My pc specs are 4060, 32GB DDR5 5200MHz, Gen 4 ssd, I play on medium, my Laptop is a 240hz monitor, I play at 240hz, have the game settings to medium or optimized by Nvidia.  All this issues are really killing the game massively, a huge turn off