Same problem here, I use Solus OS (have good compatibility tool: Steam Linux Integration. Sure no problem with library compatibility, and sure no problem with many mods. Only problem with Undead Legacy, why, yes, the UI and the momory out of 16Gb; maybe we can ask to the autor to make a little patch ith this informations. I have crash many times at loading map with 32bag, but many times I can start with 80bag (after 5-10min crash, i have 8Gb RAM. Sorry for bad english.