This is has just started effecting me too. Playing "Hellblade: Senuas
Sacrifice" on steam (so steam play / radv / dxvk)

mesa via pkppa

kernel 5.1.15-050115-generic (ubuntu kernel ppa)
libdrm-amdgpu1:amd64                2.4.98+git1906260630.4
mesa-vulkan-drivers:amd64           19.2~git1906240730.3b6

this wasn't happening 2 days ago, now it happens consistantly