dtgreene: Unfortunately, I have a negative result to report.
I decided to try Janosik on my "big" laptop, which has an AMD 3500U and integrated graphics, and from what I attempted to play, the game kept stuttering to the point where it's not comfortable to play.
(This is a computer that can run Oblivion and the Pathfinder games without issue. Worth noting that I used the Linux build, if that matters.)
Linux can be sketchy at times. I have several games that work flawlessly that shouldn't and 90% of the games that I should be able to run in linux are either incapable from broken elements or seemingly no reason I can find.
Maybe grab the Windows version and test Wine and/or Lutris? Wouldn't surprise me if it will run just fine like that, instead of native linux.