Premiere and after effects seems to be really slow on my brand new macbook pro

I have a brand new MacBook Pro (Retina, 15-inch, Mid 2015)

specs:

2.2 GHz Intel Core i7

16 GB 1600 MHz DDR3

Intel Iris Pro 1536 MB

and yet the performance which from my last computer (mac mini 2011) should be much better and I should not have slow editing and lagging in my editing which is why I bought this computer.

Is there any way to optimize my computer for premiere, after effects and photoshop to be faster for my computer.

also watching my CPU while using the program it seems to say it is using 400% of the CPU.