UE5.8 Editor UI has very poor performence (cant even edit assets) when using Vulkan

[Kamil457]

Summary

You almost cant use editor if you changine RHI to Vulkan

What Type of Bug are you experiencing?

Editor

Steps to Reproduce

1. Create default FPS project
2. Go to project settings-> windows
3. Mark SM5/SM6 on Vulkan
4. Change default RHI to Vulkan
5. Restart project

Expected Result

Smooth UI same as you use UE 5.8 DX12

Observed Result

After changes if you open project setting/editor settings its became so laggy, for my example I cant even open assets because UI is broken.

Affects Versions

5.8

Platform(s)

Windows

Additional Notes

Please fix UE 5.8 UI when using Vulkan!