Hi Folks, I just got my new 2019 iMac received and setup. I got the base 8 GB RAM option and upgraded myself with Corsair Vengeance Performance Memory Kit 32GB DDR4 2666MHz. Upon first boot, I have noticed an issue. My iMac has recognized 40 GB of RAM. But the speed is shown 2400 MHz, instead of 2666 MHz. Additionally, the About window is missing the "Memory" Tab. Anybody knows what's wrong?