Pixelated lag with iMac, Astropad, and Lightroom

#1

I am using an iMac (2017) with an iPad Pro 12.9", connected via USB-C.

When using Lightroom and adjusting sliders to edit an image, the image becomes very pixelated and lags for a little bit while Astropad updates.

Comparing this to Duet Display (also connected via USB-C) there is a HUGE difference. Duet has almost no lag and no pixelation.

I’ve seen issues about this from 3 years ago in this support forum with fixes that were supposed to be out equally as long ago.

What is Astropad’s response on this?