Surprisingly, a lot of the creepy media is fairly accurate, though extreme. Demons aren’t prominent, we know they are angels who rebelled with Lucifer, and were cast out, so that would be their appearance, but in reference to possession, we basically have those that Jesus encountered and a few his apostles drove out in his name later on.
And what we see are people behaving almost like animals, screaming, shouting, with an inhuman strength to break chains or whatever locals have tried to contain them with, and inflicting a lot of self harm. There’s a woman who would throw herself into fires, a man who had 100 demons in him (where “I am legion” comes from") who would throw himself onto rocks and off cliffs and cut himself, etc.
The more manufactured elements are the head twisting, anything to do with pentagrams, and honestly a lot of the hostility to others. People usually steered clear, but demon possessed individuals generally did more self harm than harming others, with cases where Jesus would meet them within cities, and they weren’t surrounded by dead people or a panicking mob or anything. They also don’t “haunt” or hunt people like they do in movies, but are usually extremely obvious.
Anyway, that’s my experience purely from biblical account, off the top of my head, I’m sure others can add more detail or examples.
I think a lot is being made of this headline, honestly. Indiana Jones did the same thing using the same engine… and runs well on a broad variety of hardware, including AMD cards with no dedicated RT accelerators. And that’s not an experience designed with high framerate competitive action in mind.
I also literally booted Doom Eternal for the first time in a while today, enabled raytracing, and played at 120FPS with 4K native on a 7900XTX, all settings on High. Id knows how to frigging optimize a title, and you can bet their raytracing implementation will be substantially better optimized than the RT we’re used to seeing. So long as you don’t run it with Path Tracing (a future forward feature, like Crysis back in the day), I fully expect you’ll still be able to get high framerates and incredible visuals.
Wait for the Digital Foundry tests before buying if you’re uncertain, absolutely, but I really don’t see any reason to be concerned with the way idTech 8 has been shaping up.