Everything was working fine until about 10 days ago when I started noticing what is either lag or another video problem when editing in Lightroom on my 2017 MacBook Pro connected via USB to my 2017 iPad Pro. When editing (with sliders or a brush), the screen flashes between normal and much lower contrast until I complete the edit.
As I said, this behavior is new and Lightroom has not been updated for a few months (far before this started). I am using Astropad Studio v 1.6 (2631) on my MacBook Pro and 1.6.1 on my iPad Pro.
USB Connection Quality: Highest
Response time: 2 or 3 milliseconds
The only other change that might have affected this is that I switched from an xWrite iDisplayPro to a DataColor Spyder 5 around the same time (but I am not 100% sure whether it was before or after the problem started).
Any ideas or suggestions on what to try?