Codemasters is probably the worst company I've ever seen in my life... The problem with Codemasters F1 is that's a port out from console. So XB1 and PS4 are their priorities. Also, assists are always super unbalance, which mean the drivers with assist could be faster than a non-assist driver. Another point, online is P2P, so if someone has a bad connection, it could affect everyone. Codemasters focus more on single player and console. Why assists are that unbalanced? Because a lot of kid play that game with a gamepad in their console, so they must make it easy to drive so they game win either with Alonso or Vettel
Why F1 2013 was the best game so far? Because online was more stable and it was more an arcade game. Since 2015, they changed the physic and try to make that game more a simulator, but they are miles away from iRacing, Assetto Corsa and Project Cars.
Personally, the only good point of this game is about the strategy in race and the fact you are racing all official F1 track. Year after year we are testing their new games and it's always bug, after bug... it never ends hahaha. This is why I've switched to iRacing

. Did I miss F1? Yes, because I loved to race with the group we had before and used to like the racing. But since 2014, I've lost all interest because of all bug and because I've discovered iRacing hehe.