MiaEdt The prompt to choose a season is yet another known bug:
[S] Stuck on Select Season for several unrelated interaction (1.113.288/2.09) | EA Forums - 11967917
Your dxdiag lists a couple of crashes of Razer's Game Manager Service and of a component of McAfee. So I would suggest trying to play with the former uninstalled and the latter disabled. As long as you don't do anything else at the same time (close all browsers, etc.), your computer should be safe.
Another useful test is to play with your computer offline. You can sign into the EA App and put it in offline mode, then disable wifi and/or disconnect the ethernet cable before pressing Play. Even if you wouldn't want to play like this, knowing the result would be helpful.
I will say though that if the game only lags after a few hours, AND if saving/quitting/reloading fixes it, at least for a while, you're getting better results than a lot of players. Sometimes lag seemingly comes out of nowhere, probably when the game is tripping over something in the background that you never see. So let me know whether the lag resolves, either on its own or when you reload the game.
.png){kind=link}
.png){kind=link}