I have updated my original post and will copy paste here below also in case u miss it for a possible fix for the flicker after disabling GSYNC:   NVIDIA have now got back to me, they are aware of some of these issues and a new Driver addressing them should be available by the end of this month, they also gave me this link for a reg fix for the flicker after disabling GSYNC https://nvidia.custhelp.com/app/answers/detail/a_id/5157/track/AvNKvQrCDv8S~bUtGmwe~yJl4uEqeC75Mv~Q~zj~PP8Z