What is this booting problem for my Samsung s6 edge?

[aishwarya chevuturi]

There is green background with details stating 'android is starting optimising app 1 of 1' and this is taking a min time of 10mins before switching on.
Am getting this everytime i restart or swich on my phone

 

[B. Diddy]

Welcome to Android Central! Does this go away if you clear the system cache partition? https://support.t-mobile.com/docs/DOC-29236

I moved this from the Marshmallow forum to the S6 edge forum, since it's more of a device-specific issue.