Unforunately it does seem like squad battles in general is having a lot of issues this year. I too have experienced the random disconnect when you are winning easily, it happens at least once a month. This week I also have no team of the week featured squad battle as well.
In regards to the world class the speed is way off but despite this I am able to get my goals most times, however what really gets me is the random goal against you that happens relatively often especially on world class games.
This usually take the form of a 60 rated player or something hitting a 35 yard shot that is straight at the keeper and just sort of loops right over him into the net. It actually seems to happen more often against the worse teams than it does against the higher teams on World Class. It's like the game has just decided okay going to score now and theres nothing you can do.