Is my CAP2 turnover that awful for day 2 on the floor?

I've been on the floor two days from 2 - 11pm, today I did 5 1/4 carts. First day on juice. Manager talks to me and says I'm not doing enough. I should be doing 40 boxes per hour, 8 carts per day. As I have another person with me I should be moving faster even though juice is 3 aisles and he doesn't want to work together or help really. The supervisor under my manager informed her I'm taking too long and I better move faster going ahead.

I'm taking NSAIDs just to get through the day, I soak my feet 4 or more hours a day, I don't take breaks as long as everybody else, and I don't go missing for 10 minutes after lunch ends. Furthermore I did almost as much as the guy I was paired with who had additional help from one of his friends.

I feel like, wtf?