Hi plnorden, I have the same issue here. Did you try to upgrade in the meantime? I really would like to keep my very good 15" mid-2015 MacBook Pro. AVID MC 2021.12 works fine but I need to upgrade to OS Big Sur to make my ASUS ZenScreen stil works. Any ideas? Thanks! _______________ Mid 2015 MacBook Pro macOS Catalina 10.15.7, Quad-Core Intel Core