Reply to Custom screen resolution for M1 MacBooks I've been using RDM - https://github.com/avibrazil/RDM and works great, look it on git by avibrazil, - https://github.com/avibrazil/RDM I just tried in the M1 (apple mini) and I am getting so nicely 5120 x 1440 120hz! on the G9, truly awesome. App & System Services Core OS Dec ’20