DirectX 12 games ran through Proton/Wine on Linux perform so much worse compared to Windows. This can’t be just the overhead from the translation as AMD GPUs perform just fine, but I think it’s due to a lack of proper driver optimizations. DXVK and VKD3D developers have acknowledged this and they c…

It’s already in the Vulkan developer beta drivers, and it seems it’ll be in 595, which should release soon. But the vkd3d-proton side still needs a lot of work, so it’ll likely take a few months until everything is ironed-out and available in Proton by default.

For all those who need to understand all the stack of how Windows games are translated in Linux, there is an amazing video made by GloriousEggroll that explain it perfectly. The video is not related to the DX12 bug, but it helps to understand many things decribed above. [How Steam Play/Prot…

it’s not looking good on Win, let’s hope Linux will be better: [Vibe Coded Nvidia Drivers?]

VK_EXT_descriptor_heap extension was added to the lastest 595.45.04 drivers

Added support for the VK_EXT_descriptor_heap extension. Fixed a bug that caused GPU hangs and Xid errors in Black Myth: Wukong. Added support for DRI3 version 1.2. Added support for the VK_EXT_present_timing extension. Fixed hang when NVIDIA Smooth Motion is enabled in applications that use VK_KHR_…

Here’s the discussion. [image] 595 release feedback & discussion Linux Added support for the VK_EXT_descriptor_heap extension. Fixed a bug that caused GPU hangs and Xid errors in Black Myth: Wukong. Added support for DRI3 version 1.2. Added support for the VK_…

Most people here may be aware, but as a reminder, the presence of the VK_EXT_descriptor_heap extension is good news, but just part of the puzzle. The Proton VKD3D code has to support it, and that work is still in draft/prototype stage.

[image] gtschemer: e of the VK_EXT_descriptor_heap extension is good news, but just part of the puzzle. The CachyOS Proton version has a beta with those vulkan extensions in it right now so it won’t be much longer. Though from what I’m seeing from various anecdotal experiences, it’s a mixed b…

The implementation in VKD3D is still just a placeholder for comparison while it’s being developed, so any effect you see is essentially just a placebo at this point.

As mentioned, the VKD3D work is marked as in the draft/prototype stage, and the author stated it is “not ready for wide testing yet”. I respectfully encourage not trying to incorporate a partial version of an in-development update.

DirectX12 performance is terrible on Linux

Graphics / Linux Linux

taosecurity March 6, 2026, 3:04am 702

Here’s the discussion.

Topic		Replies	Views
Please sort out the DX12 (vkd3d-proton) performance under Linux Linux	6	8328	August 30, 2024
610 release feedback & discussion Linux	206	23548	August 1, 2026
BUG: Indiana Jones and the Great Circle only runs at ~40% of max TDP on RTX 4090 Linux	87	22900	January 17, 2025
VRAM Allocation Issues Linux	90	31944	April 10, 2026
Low performance in DOOM Eternal Linux	38	11375	June 23, 2021
Starfield does not launch on most NVIDIA GPUs on Linux, and not at all on Pascal GPUs Linux linux-driver	175	48147	December 14, 2023
Non-existent shared VRAM on NVIDIA Linux drivers Linux	155	38464	July 7, 2026
Extremely poor performance on a few selected applications Linux	0	2138	January 16, 2016
555 release feedback & discussion Linux	275	49198	January 10, 2025
575 release feedback & discussion Linux	507	49433	May 28, 2026

DirectX12 performance is terrible on Linux

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