Hi all,
So I have rendered an animation and each frame had taken about 55-60seconds.
Of that time 13-16seconds was the scene setup (sync objects etc)
When it syncs objects it usually does 2-3 objects looks as if the program freezes (blue spinning mouse curser) then 7-8seconds later resumes.
I don’t know if the blender is doing stuff or having a moment of blah…
I was fiddling with my blender file and got the scene setup to 5-6 seconds. As if that whole 7-8seconds delay disappeared!!!
I don’t know what I did? And cannot replicate the faster performance!! 
When my blend file opens I usually have simplify enabled subdivision set to 1, and the A.O. bounce count to 3max.
As for other settings. In my blend I didn’t touch them in that one instance it worked fast!
I was only changing values in the simplify section…
Then noticed one render finished well 8 seconds faster!
to which I actually eventually changed the settings back to what they were as if the blender file was just opened… and the changes were evedent as for better quality renders… only blender was no longer having that 7-8second timeout!
My sys spec.
Ryzen 1600 @ 3.95 GHZ
16GB DDR4 @ 2400
Windows 10 Pro
GTX 780ti 3GB + 2x GTX 1060 3GB
I hope someone here knows what is going on