Input Lag in Grand Theft Auto IV / Episodes from Liberty City

[MrEWhite]

If I use DXVK on GTA IV, I get input latency that doesn't occur when running the game without it. It happens if I use v-sync or not, so I have no clue what the issue could be here. Happens with any mixture of settings/resolution/frame rate, and happens with dxgi.maxFrameLatency & d3d9.maxFrameLatency set to 1.

It's not an unbearable amount of input lag, but it's most definitely noticeable when compared to running the game without DXVK.

Software information

Disc version of Grand Theft Auto IV on Patch 1.0.8.0

System information

• GPU: Nvidia RTX 3090
• Driver: 516.79
• DXVK version: v1.10.2
• Windows 11 Pro

Log files

GTAIV_d3d9.log

[K0bin]

I can't really tell you anything except that it feels perfectly fine on my system.

Make sure you don't have any Vulkan layers like overlays or recording tools installed. Those could mess things up.

[MrEWhite]

I can't really tell you anything except that it feels perfectly fine on my system.

Make sure you don't have any Vulkan layers like overlays or recording tools installed. Those could mess things up.

I don't have anything like that installed.

[Evernow]

Does it also occur on Linux?

[DaveACG]

Can second this. DXVK produces a significant amount of input lag compared to DX9 in GTA IV.

[Evernow]

Can second this. DXVK produces a significant amount of input lag compared to DX9 in GTA IV.

Did you observe this on Linux?

[DaveACG]

Can second this. DXVK produces a significant amount of input lag compared to DX9 in GTA IV.

Did you observe this on Linux?

Whoops no, Windows. My error, forgot that dxvk on Windows is more of an 'off label' usage of it. :)

[MrEWhite]

Does it also occur on Linux?

Sorry I forgot to reply to this, but I don't have a Linux install, so I couldn't test it.