About dashboard on mobile prefer cache in 4.1 SP5

Hey guys,

I heard that Dashboard initial time on mobile will decrease after enable prefer cache in BI 4.1 SP5.

I've already enabled prefer cache in mobile application and CMC.

I've done in cache server also.

But Dashboard  still load in same time.

(My dashboard is huge. It use 20-30 sec to appear)

Do I miss somethings?

Thank you.

Tithipong p.