Please provide the below information :
1. Graphic Card.
4. Third Party Plugins Installed (If Any).
Do you have any secondary monitor attached to your machine. If yes, try to remove it and then check.
yes I do have an external monitor unplugging it did not help. thx
I found the solution smh ... Originally adobe had the renderer set to Mercury Playback GPU Accelerated (OpenCL) once you upgraded to the new OS and updated Adobe CC the default renderer sets it to MERCURY PLAYBACK ENGINE SOFTWARE ONLY. Just change the renderer to Mercury Playback GPU Accelerated (OpenCL) and bingo your back in the game thank me later. Peace.
I'm assuming this fix won't work for people without an NVIDIA graphics card?