OK so the bare bones to remember with a jaw crusher:
It's only crushing for 50% of the cycle time so it isn't very energy efficient
CCS means closed side setting (the nearest the Jaws get together)
If you set the Jaws too close together for the size of rock going in (ie you're asking the crusher to do too big a size reduction in one step) you will see the rock jump up and/or out of the crusher, the cycle will take longer and be even less efficient.
It is more energy efficient to screen using your grizzly or multiple of various sizes, run a batch of rock and get the CCS optimised, run all your rock of that size and put the product in a stock pile.
Then re process that stockpile with the CCS closer together.
Repeat and screen as required.