Here, I’ve recorded a video with my phone that does show the issue:
I have recorded in 120 fps and slowed it down to 33% speed.
Quality isn’t great, but you clearly see the tearing. I know filming a 60 hz panel with a 120 fps camera in general isn’t ideal - but I can definitely not see anything like this when running it with D3D11 instead of Vulkan, that’s perfectly smooth. So it’s some issue with the rendering by Vulkan.