Current mesa in solus stable is unstable with navi. I can confirm mesa 20.0.4 has solved crashes with totalwar warhammer 2 and wow in wine. I have tested this on ther distros aswell i.e ubuntu, arch. Mesa 19x is unstable and should be replaced with newer version. If you have a navi card and are currently experiencing seg faults or crashes
mesa 20 fixed it for me.

    beefymiracle I am in the process of working through the mesalib update. Our libglvnd needs to be pulled kicking and screaming forward and the changes in libraries and headers between the two packages are requiring mandatory rebuilds of around 200 packages. That said, it's unfair to say that Mesa 19 is unstable in general when it is only somewhat unstable on the newest GPUs when running certain software.

      Yeah I know its a process. I was tearing my hair out trying to nail down the culprit to the crashes. The feed back on navi seems to be limited. So I just wanted to post my finding regarding general unstable behavior with navi and the
      current mesa. Also I tested with a rx 480 and vega 56 as well and this seems to be only affecting navi based cards.