Off wifi certain apps take forever to show updates

[DerrickG72]

Hey there... this is my first WP, I made the jump from iPhone 5 to the Lumia 1520 with the Cyan update on ATT.
I have noticed that apps like Facebook and Instagram take a long time to load updates when I am off wifi.

Is there something I can adjust here to make it faster?

 

[Jazmac]

Slower in mobile? Not on my 920. It loads about the same speeds.

 

[DerrickG72]

It is really slow in mobile. Not sure why. The iPhone was seamless between wifi and cellular.