Galaxy S6 camera launch issue after marshmallow update.

[AC Question]

Hey guys,

I recently updated my phone to marshmallow (Android 6.0.1) and I found some annoying issues I would really like to fix.

Launching the camera from the lockscreen is still as quick as it was before the update but it only takes 7~9 seconds then the screen turns off and the phone locks.
It is really annoying if you are trying to take a shot that would take time to shoot so any help would be considered as the issue is really annoying for me.

Thanks in advance.
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Phone: Galaxy S6
Model: SM-920F
Software: Updated to Android 6.0.1
Root State: Not rooted