I don’t have much experience with AMD gpus on Arch.
I was looking at the Arch AMD GPU wiki page and it looks like you might also need to run
pacman -S vulkan-radeon lib32-vulkan-radeon mesa lib32-mesa xf86-video-amdgpu
But admittedly there’s a lot about AMD GPU drivers I don’t understand. Like how to verify your driver in installed correctly.
You might also want to try out amdgpu_top
or radeontop
to monitor what the GPU is doing.
Both Porco Rosso and sound of music are excellent films for kids of you want to start to talk to them about fascism.
Anyone know of more?