I don’t have a workaround but I do know that the devs need help from those affected by black screens to be able to fix the issue. See post here:
Generally speaking I’d definitely agree with the sentiment of the thread. I’ve been enjoying some fantastic flights on Series X recently. It still blows my mind that they have been able to squeeze the sim onto a console. I’m looking forward to some performance improvements in forthcoming sim updates, but generally already very happy with what we have already.