[MC-307679] Turning on VSync limits the framerate to an incorrect value with the Vulkan rendering backend

To reproduce:

Start up the game with Vulkan enabled.
Enable VSync.
Fps is now permanently limited to 30 fps even if VSync is disabled again. Only way to fix it is to restart the game. (while VSync is turned off)

I have a 60hz monitor and fps are correctly limited to 60fps when using OpenGL. Also this has been an issue since 26.2 Snapshot 1.

Environment

Windows 10 22H2 (Build 19045.7184), NVIDIA GeForce GTX 1050 Ti, 60hz monitor

Linked issues

relates to 1

MC-307384 Screen tearing occurs with the Vulkan rendering backend in fullscreen mode with lower framerates, even if VSync is enabled Resolved

Comments 1

phizlip 2026-04-24T03:35:46Z

I’m unable to replicate this issue. Starting the game with Vulkan and enabling VSync properly limits the fps to match the refresh rate of the current monitor. I’ve tested this with a 144 hz display and a 72 hz display, both with one displayport output from a RTX 2080S at a time with the same outcome.