AMD Vega 56 artifacting (and old driver version?)

Recently brought a GPU from ebay specified as opened but unused but I have received GPU artiacting multiple times.

inxi -Fxxxz output:

System:    Host: amd_user-desktop Kernel: 5.4.52-1-MANJARO x86_64 bits: 64 compiler: gcc v: 10.1.0 Desktop: Xfce 4.14.2 
           tk: Gtk 3.24.20 info: xfce4-panel wm: xfwm4 dm: LightDM 1.30.0 Distro: Manjaro Linux 
Machine:   Type: Desktop Mobo: ASRock model: H110M-ITX serial: <filter> UEFI [Legacy]: American Megatrends v: P7.20 
           date: 03/01/2018 
CPU:       Topology: Quad Core model: Intel Core i5-6400 bits: 64 type: MCP arch: Skylake-S rev: 3 L2 cache: 6144 KiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 21607 
           Speed: 800 MHz min/max: 800/3300 MHz Core speeds (MHz): 1: 800 2: 800 3: 800 4: 800 
Graphics:  Device-1: Advanced Micro Devices [AMD/ATI] Vega 10 XL/XT [Radeon RX Vega 56/64] vendor: Micro-Star MSI 
           driver: amdgpu v: kernel bus ID: 03:00.0 chip ID: 1002:687f 
           Display: x11 server: X.Org 1.20.8 driver: amdgpu,ati unloaded: modesetting alternate: fbdev,vesa 
           resolution: 3840x2160~60Hz, 3840x2160~60Hz 
           OpenGL: renderer: Radeon RX Vega (VEGA10 DRM 3.35.0 5.4.52-1-MANJARO LLVM 10.0.0) v: 4.6 Mesa 20.1.3 
           direct render: Yes 

sudo mhwd -li output:

> Installed PCI configs:
--------------------------------------------------------------------------------
                  NAME               VERSION          FREEDRIVER           TYPE
--------------------------------------------------------------------------------
           video-linux            2018.05.04                true            PCI

Surely this is not the newest version? But doing mhwd -lsuggests it is.

> 0000:03:00.0 (0300:1002:687f) Display controller ATI Technologies Inc:
--------------------------------------------------------------------------------
                  NAME               VERSION          FREEDRIVER           TYPE
--------------------------------------------------------------------------------
           video-linux            2018.05.04                true            PCI
     video-modesetting            2020.01.13                true            PCI
            video-vesa            2017.03.12                true            PCI

Do I need video-modesetting or video-vesa?


Hello,
One workaround is to disable display compositing in Settings > Window Manager Tweaks > Compositor

The other solution is to change vblank mode to xpresent and reboot:

 xfconf-query -c xfwm4 -p /general/vblank_mode -t string -s "xpresent" --create

No need for those in your case.

I have done lots of testing with this as well as Window Manager settings with other DEs but I just cannot find a solution. It's possible that using your settings delays when artifacting occurs when in-game, but it ultimately still doesn't stop it.

What else can I try?

I'm stupid. It was a hardware problem, nothing to do with Manjaro.

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