Steps to reproduce:
Enable V-Sync using the Vulkan rendering engine.
Play the game or open/close any in-game menu.
Expected result:
Frame pacing is smooth and stable, with normal input latency comparable to OpenGL.
Actual result:
Frame pacing periodically breaks down/stutters with no obvious pattern (happens randomly during gameplay or after opening/closing menus). Additionally, enabling V-Sync on Vulkan results in significantly higher input latency compared to OpenGL.
Notes:
The issue does not occur on OpenGL.
Reproducible on both the current release (26.2) and the latest snapshot (26.3-10).
Screenshots of the frame time graph and settings are attached.
Environment
OS: Windows 11 Pro 64-bit (Build 26100) - CPU: Intel Xeon E5-2689 0 @ 2.60GHz - GPU: NVIDIA GeForce RTX 3060 - GPU Driver: Game Ready Driver 610.74 (Jul 7, 2026) - RAM: 16 GB - Display: 1440x900 @ 60 Hz
Attachments
Comments 5
Thank you for your report!
After consideration, the issue is being closed as Invalid.
This report does not describe a bug.
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Can confirm on 26.3 Pre-Release 3.
It is indeed ridiculous that this is marked as invalid when V-Sync is completely and unusably broken in the Vulkan API that the game will soon switch to, which means that OpenGL will become deprecated.
V-Sync is absolutely necessary when running fixed or lower refresh rate (e.g. 60 Hz) displays, or when uncapped framerate is unsable, to achieve perfectly smooth frame pacing. V-Sync with Vulkan currently feels like 100-200+ ms worth of frames are buffered before being displayed to me. I’m not sure of the exact cause, this is just an example of how the input feels.
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