Vulkan error when starting some games

I have installed Vulkan, but when I try to start Epic Games or LOL, it says that I don’t have it installed or my system is not compatible.
I have an AMD-9700 APU, with Carrizo R7 integrated, so I guess it’s compatible.
I am using Arch, and I installed the vulkan-icd-loader package, and the drivers vulkan-radeon and amdvlk.

Anyone knows why it doesn’t work?