I’ve installed Manjaro with KDE Plasma, most recent bundle(1week ago) from the Manjaro website. Been playing Path of Exile which runs great, but I’ve installed The Division 2, and there a flickering that make my eyes want off themselves. I’m running the open-source video-Linux 2018.05.04. Would it be better to switch to AMD proprietary. I’m using a 144Hz 1440p freesync monitor paired with a 2560x2880p 60Hz secondary powered by a 7900xt.
That version number doesn’t look right and probably isn’t the driver (given it’s well before the 7xxx cards were released). Make sure you have a recent version of mesa and the kernel (and vulkan drivers) and that amdvlk and amdgpu-pro are not installed.