Installation not working on MAC pro 2014

Hi , issue was sorted and ue installed nicely. However, I am experiencing a flickering effect in editor, almost like whole scene wobbles in a grainy effect.

Mac pro late 2013

Processor 3.7 GHz Quad-Core Intel Xeon E5

Memory 12 GB 1867 MHz DDR3 ECC

Graphics AMD FirePro D300 2048 MB