Same problem here as also reported on Steam forum : https://steamcommunity.com/app/3230400/discussions/0/797839944586477243/
" it pauses every time a player touches another player, the ball, or the ground. I can predict the exact stutter moments"
Until the last mini-patch (released on 28th March or close) the game ran perfectly in every mode/component ( menus, frenchise , custome game, on line) now there's this very annoying issue which not occured in training mode (so it should be something related to crowd, commentary or whatever else).
It's obviously not a "hardware problem" since all the drivers are up to date but above all the game was very smooth even at "ultra" details until a few days ago... I have already opened a ticket but with little hope. Disabling "on field visual feedback" doesn't help but on the other hand, the game run very well even with that option enabled since 4-5 days ago...