So, I installed Raspbian for the Pi 4, I've had it for a few months, but never quite done much with it yet. My monitor has a native resolution of 3840x1600, and a FreeSync range of 48-75, regardless of whether it's via HDMI or DisplayPort.
The HDMI cable I am using was originally on another computer that was displaying 3840x1600@60 with no problems.
Recently, I tried to actually poke into a few details. However, I've noticed that when I check the display settings, it showed that it was correctly running 3840x1600 resolution, but indicated that it was running at a refresh of 30Hz, with no option to increase it.
Is there something I'm missing here? How do I get this to work at 60Hz?