> Based on their results...

Do note that they make it very, very, very clear that their results are preliminary, and while they've put a whole lot of work into setting up benchmarking on Linux, they're not at all sure that they've got it all correct.

> ie: very inconsistent frametimes on Nvidia hardware

Yeah, Nvidia on Linux for non-"compute" use has always been a terrible, godawful shitshow. Given Nvidia's recent and fairly-clear disinterest in the "selling graphics cards for people to play video games with" market, [0] I can't imagine things will get consistently better anytime in the near future. [1]

[0] Why sell that silicon to video gamers when you can sell it to cryptominers and -these days- "AI" companies for a much, much, much higher profit?

[1] I mean, it took them how many Windows driver revisions for them to release somewhat-non-garbage drivers for their spanking-new fancy-ass 5000-series cards? And Windows is the only consumer OS that they care about! For video game use, the Linux drivers are gonna be starved for development resources, and -unlike ATi/AMD's drivers- noone in the world can work on them but Nvidia.