What resolution do you run with this monitor ?I installed the DDPM app, but don't really use it.
Actually, it won't even run on my "Main OS" (2018 Mini using Mojave).
When I use it on my "experimental copy" of Sequoia, its functions seem limited.
I found that "BetterDisplay" is much better, so I use that instead.
Even the free (unregistered) version is better.