Mac Studio (M1 Max) and the Dell UP3218K (4K HiDPI)
I'm having some trouble with my new Mac Studio and the Dell UP3218K. While it will display half of the screen correctly the other half appears to have timing issues. The Dell UP3218K uses two DP1.4 connection where each drive 3840x4320 pixels from the panel for a total of 7680x4320 pixels across both connections. This worked on my Mac Pro 5,1 with a VEGA FE graphic cards in macOS 10.15.7 (Mojave).
I'm having some trouble with my new Mac Studio and the Dell UP3218K. While it will display half of the screen correctly the other half appears to have timing issues. The Dell UP3218K uses two DP1.4 connection where each drive 3840x4320 pixels from the panel for a total of 7680x4320 pixels across both connections. This worked on my Mac Pro 5,1 with a VEGA FE graphic cards in macOS 10.15.7 (Mojave).