bitman
They sped up file import and other similar operation by a ton.
Wonders what was the old code doing.

@bitman, can you provide some details on the specific import and export scenarios where you have experienced a speed up?  I've been discussing what appears to be a lack of full CPU utilization and multi-core optimization for import/export in this thread.
I have not seen any improvements in this area in the 2016.11 and 2016.12 updates. 
 

I found the load balancing option.  And it was unclicked.  I wonder why it is not a default?  

deswind
I found the load balancing option.  And it was unclicked.  I wonder why it is not a default?  

Because if you're nit having problems (eg project doesn't have loads of plugins), then you don't need it checked.

Also, I believe it can cause issues on less powerful computers, IIRC.

I will try to look out the thread where Noel talked about it, when I get time.

Thanks jb101  - so it seems there may be a downside to have all the cores spreading the load.  I am wondering scientifically why that would ever be the case.  Anyway, I am sure there are bigger issues out there.
THANKS!