
Simon L. answered 10/22/20
Professional Film Photography Teacher
From my understanding.
When you calibrate a Monitor (I have a Spyder 5 elite) it's specifically set on that monitor and will continue to be calibrated until a few months later when it deteriorates.
So when you are working on specific projects, I'd advise pulling up photoshop on the main monitor that is calibrated. I understand both may be calibrated, but Desktop PC's prioritize the first screen monitor thats connected to the Graphics drive.
Hope that helps!