2560x1080 HiDPi resolution not showing up on M1 Monterey

[migs0815]

I tried to create a custom resolution (2560x1080 HiDPI) on my M1 Macbook Air running Monterey but it won't show up. The custom resolution would show on my 2018 Mac mini running Monterey. Any help would be appreciated.

[markomitranic]

Can confirm on M1 Pro, not sure if it has to do with the CPU, but I can't get any HiDPI options in the menu.

I can confirm that I've used a USBc-DP connection (supports 4k 60f on my intel), and a 2K monitor, so that I ensure that I don't overwhelm the throughput.