MMS taking 30 minutes to send and hours for the person to receive

[zjaksn10]

My apn is the stock ATT Phone, I'm in a LTE area and sending pics through apps are instantly sent but not on MMS. Any help with APN settings or something else I can do?

 

[zjaksn10]

does anyone reply anymore or do I have to say I'm debating on going back to iPhone for people to help me?