I first started and ran the game using Proton Experimental. Sadly, sometimes when trying to enter the Inn in Gilded Vale I experienced crashes. I switched to Proton GE7-42 and the game ran well for some time.. Until I tried to assign companions to do random quests available in Caed Nua. Then it started crashing again every time I would press the Assign button. I switched again to Proton 5.13-6 this time and this seems to have fixed the problem.