I’m running windows 7 here, 4.12 Preview 4 compiled from source (with Vulkan SDK already installed) with a GeForce GTX 980. Normal editor runs fine, and I can preview in Vulkan PIE mode. I crash when adding the -vulkan flag.
Hello,
I am closing this question as a duplicate of https://answers.unrealengine.com/questions/424774/unreal-editor-412-p4-with-vulkan-flag-still-crash.html
Please refer to that post for updates on this issue.
Have a great day