I consider myself an Inxile fanboy since I've really enjoyed all their recent offerings, but to have such poor optimisation at launch does sound worrysome. I hope they get their shit together fast so they don't experience another burn like with T:ToN, it's doubtful if the company will survive that?
I was considering playing this straight away and putting PoE2 on hold for a while, but I guess I'll wait a bit…
I'm not sure, because they did kickstart this to the tune of 1.5 million so they have some cushion in terms of those pre-orders. And then this game might sell well in the first weeks. I get that it might seem intuitive to think that bad player reviews are going to hurt the sales, but not so sure really. One thing is the mainstream "professional" reviewers are giving it good scores, a very respectable 8.2 on metacritic currently, and even famous youtube game reviewers like ACG are saying nice things. So it still may sell well, even so.
But yea, if this does end up being a total lemon and failure, that would suck if it led to a bankruptcy...I'm not that pessimistic, however.