> Do note that they make it very, very, very clear that their results are preliminary,

Yeah, I'm not entirely convinced some of the results they're seeing aren't caused by their methodology. I don't think they are either.

I moved a gaming pc with a 4070Ti from Win10 to Cachy 3 weeks ago and have been purposefully testing out various games to see if it's workable; I'm about 50 hours and 15 games deep now and the only thing that doesn't work reliably is HDR. Outside of that I haven't run into any issues I haven't seen on Windows as well.