FUT defensive line Fatigued in 20 minutes

Within 20 minutes of a FUT match my entire back line has 2/10th of their energy left. During half time it does not replenish. It has been this way for a month.

How can I fix?

Entire back line is basically walking 10 minutes into the second half. I have spent a least 300 USD on my team and would like to fully enjoy my experience.