I just received a Mac Studio M1 Max, additionally I purchased a thunderbolt to dual Display port adapter: https://eshop.macsales.com/item/OWC/TB3ADP2DPT/
And when attempting to connect both displays the first one connected will take 144hz, while the second is capped at 95hz. I verified both monitors(LG GN950) support 4k 144 and the cables support HDMI 1.4 DSC by connecting to my gaming PC w/ a 3080RTX.
Lastly I ordered TB3->Display port cables to check if its just the adapter that doesn’t work. But anyone with experience would be much appreciated.
One more thing:
Someone shared that they have an M1 Ultra w/ 2x 4k displays at 144, but no detailed config information
📷 Mac Studio (M1 Ultra, 2022)
📷 2 × Gigabyte M32U (4k @ 144Hz)