Monitor limited to 60hz on new PC
One of my monitors, VG27AQL1A with my new PC will no longer support 1440p 170hz and is limited to 1440p 60hz. I've found a workaround by using HDMI and getting 1440p 144 hz, but I am still curious the technical reason Display port is limited now. I made sure in Windows and Bazzite that the refresh rate setting is set as high as possible, my other 2 monitors with DP 1.4 don't have this issue, also I set RGB to 8bit not 10bit color.
Old PC: Used an Nvidia 1060 6GB, plugged in with trusted Display Port 1.4 cable on Windows 10.
New PC: AMD 9070XT, plugged in with same trusted Display Port 1.4 cable, limited to 60hz on both Windows 11 and Linux Bazzite.
What I think is the issue: The VG27AQL1A only has a display port 1.2 output, I think DP 1.2 doesn't support DSC (Display Stream Compression). Is this the reason I am limited? The 1060 GPU doesn't support DSC so it worked fine with DP 1.2. But my 9070XT does support DSC, and now there is some compatability error. Does anybody have any other ideas or is this the issue? Is there anyway to fix it?