Linux - 3840x1080 Ultrawide Resolution Not Detected

I have been attempting to get the game to play on my ultrawide properly but have failed to get it to work. The long story short is that, regardless of whether I am using wayland, x11 or pure steam mode, the game only allows up to 2560x1080 as a resolution, and while normally I really don't mind having black bars on the sides of this monitor when playing games that don't support the full res, my mouse input is not synced up to the game at all, changing any settings requires me to move the mouse well off to the side and to essentially guess where it is being detected by watching for menu items to highlight. As such this makes the game unplayable on this monitor.

Below are some technical details from my attempts as well as my set up:

System:

OS: NixOS (Linux 6.12)

Monitor: ROG Strix XG49V (3840x1080 @ 144Hz native)

GPU: NVIDIA GeForce RTX 3060 Ti (Driver 580.476.128)

Rising World Version: 0.9.1

Issue:

The game only detects resolutions up to 2560x1080, despite the monitor's native resolution being 3840x1080. This occurs regardless of display server (tested on Wayland/Hyprland, X11/i3, and gamescope).

Technical Details:

xrandr correctly reports 3840x1080 as available and active

Unity detects the monitor: Display 0 'DP-3 49"': 3840x1080 (primary device)

But SDL enumerates only 25 resolutions, maxing at 2560x1080

Player.log shows: requesting fullscreen 3840 x 1080 at 0/1 Hz followed by fallback to Set resolution to 2560x1080

Expected:

3840x1080 should be available in the resolution dropdown.

Workaround Attempted:

Manually editing prefs file to force 3840x1080 causes the game to request it, but the request fails and falls back to 2560x1080.

Note:

Other games (Cyberpunk 2077, Terraria) correctly detect and run at 3840x1080 without issue.

I am on the native Linux Version, but I am considering proton as now I am running into an issue where the game suddenly crashes for reasons I can't quite define, I am not the best when it comes to these details and have been attempting to use an LLM to diagnose the problem, but you probably know as well as I do the limitations of such tools, regardless the problem according to it seems to be a cumulative memory issue in Unity's job system (JobTempAlloc leak warning in logs) that causes the bundled JVM to crash with SIGSEGV after 45-60 minutes of gameplay or even less. I will file reports in game for both issues.

I submitted a report for both issues, and my email is attached to both, felt like mentioning it on the off chance they are related, thanks for the swift reply!