Vulkan bad performance, why?

Development Rendering
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1

Sorry, I’m using google translator, my English is very basic

For some reason Vulkan gives less fps than DirectX 11 (VK -20fps approximately < DX11).

This only happens in the EU, outside of it no problem.

I have the latest “adrenalin (amd drivers)” drivers, my UE(4.26) version was compiled.

my specs

CPU: i3 3220

GPU: RX 560 XFX 4GiB

RAM: 10 GiB

MOTHERBOARD/PC: 339A (HP Compaq Pro 6300 MT)**

(UE Running in HDD)

(Windows 10 64bits Workstation (2004) Running in SSD Sata)

a help is greatly appreciated

2

For now , i suppose UE team is focusing on D3D12 .But I find that UE has better performance when rendering Niagara Fluids Scene by UE version 5.3.2.With provement of D3D12 and Vulkan logics and usage, Just try with the newes version. Or master D3D or vulkan and try to make a better engine XD.