I am using Vulkan SDK 1.0.37. I made a small modification to the cube example (C:\VulkanSDK\22.214.171.124\Demos), in demo_draw_build_cmd(); I made every other image to be cleared red and every other green. When I run the cube example, sometimes I do not see fully red or green frames as expected. Instead I see frames which are partially red and partially green. Typically there is diagonal from top left corner to bottom right, and one of the triangles is different from the other. To me it seems that the image draw / presentation synchronization is not working as expected.
I am using Dell XPS 15 9550 with Geforce GTX 960M, Window 10 Enterprise 64-bit, driver version 376.33.