Vulkan enabled Editor - fast viewport slow UI

Hello

Enabling vulkan gives us fast 3d viewport but the general Unity UI becomes very sluggish.
For example when resizing the UI inspector/hierarchy/project tabs takes a while to update to the main window.
Navigating the 3d view is however more responsive with vulkan enabled.

Only notable difference when stracing with/without vulkan is when it's enabled, there is a huge amount of this repeated when resizing the UI:

Code (CSharp):

1. read(100, "Mobile: 4294967295\nResmanDebugLe"..., 1024) = 599
2. open("/dev/nvidia0", O_RDWR)            = 100
3. open("/proc/driver/nvidia/params", O_RDONLY) = 100
4. read(100, "Mobile: 4294967295\nResmanDebugLe"..., 1024) = 599
5. open("/dev/nvidiactl", O_RDWR)          = 100
6. open("/proc/driver/nvidia/params", O_RDONLY) = 100
7. read(100, "Mobile: 4294967295\nResmanDebugLe"..., 1024) = 599
8. open("/dev/nvidia0", O_RDWR)            = 100
9. open("/proc/driver/nvidia/params", O_RDONLY) = 100

We are using 1.1.77.0 of the vulkan libs. nvidia driver 390.48, gtx 1080 card
Centos 7.5, 2018.2.7f1, empty Unity project under default 3D template.

Any ideas what we can try?

Thanks

 

This is a known issue.
Currently, each gui view in Unity is its own OS window with its own GL context / Vulkan swapchain. It's apparently much slower to resize one of these in Vulkan (at least what we're doing today) than it is in OpenGL.
We're investigating our options.

 

Good to hear it's on your radar already

Thank you

 

Still no fix, the Unity editor in Vulkan is beyond slow when resizing windows.

 

Just for record, this is still an issue. Running PopOS 20.04, vulkan 1.2.131, nvidia GTX 1050Ti driver v440.100

 

Are there any plans to change this? Opening a new window for each tooltip is quite slow and glitchy with OpenGL too. For example if you hover something in the ProBuilder window it flashes black when opening a tooltip. In addition each tooltip creates a new entry on the task bar for its duration, which looks a bit sloppy