Question Im having trouble and confusion trying to reach 120hz 12288x2160.

[robthatguyx]

Hey guys! long time no see. Im having some troubles trying to get my end game sim rig underway. I have 3 42 inch lg c2's and I am running 1 of them on a hdmi2.1 cable, the other 2 on 2 passive cable matters dp1.4 to hdmi 2.1 adapters into an hdmi 2.1 cables.

Here are said parts

https://www.amazon.com/dp/B08XFSLWQF ( for whatever reason this one doesnt want to embedd)
https://www.amazon.com/dp/B099ZRBW2N


Here is where things are getting <Mod Edit>. I can run them at 4k 120hz 10 bit when in tripple screen mode. When I switch to try to do eyefinity both with the auto setup and the eyefinitypro config .exe It will force me to 60hz. If I drop down to 7680x1440 it will let me do 100hz. I am very confused why it lets me run these screens at 120hz 4k when not in eyefinity but I get gimped when using it. If the adapters and cables were not able to do 3x4k120 why can I do 4k120 when using them as normal multimonitors? I feel like im missing something very dumb somewhere and im coming up blank looking online on my own.

Any input at all is appreciated


the pc this is on
windows 10
13700k
power color red devil 6900xt with the latest drivers (will be bumped up next gen when something replaces the 4090)
32gb of ram

 

[boju]

Not sure if thisll help but try expand your research with simpler terms not specific to your displays but eyefinity in general.

Like eyefinity locked to 60hz

There's quite a bit on it with people having similar issues like this thread. I know it's a few years old, but one thing leads to another.

https://community.amd.com/t5/driver...driver-update-eyefinity-only-60hz/td-p/349422

Custom resolution utility and gpu scaling is mentioned frequently as possible workarounds or settings might want to look at.