VRXVR The problem currently is with the stream files visual quality as they are capped at 30mbps even for 8K witch is very low for such high resolutions.
If you want to see an acceptable quality, you should download and play the original high bitrate files. But that's also will be taken away sooner or later unfortunately.
Best of luck.
I actually think the crappy image quality at the moment is a combination of a couple of things.
Personally i think the latest Meta firmware update v74 has defaulted to a lower resolution as this has happened to me before. The reason i say this is not only does DeoVR look very fuzzy / fluffy streaming, but even Heresphere and Skybox playing scenes that i know are awesome quality don't look pin sharp like i know they are.
This is an issue that seems to resolve itself over time (Maybe Meta update the resolution on the quiet once they know the update is working as it should)
The second reason is the latest DeoVR update is particularly buggy, mainly regarding the sound but also image quality with loads of bitrate issues, it's almost as if they have released an older version bringing back Colour and Sharpness issues.
These two issues together seem to be compounding the problems and making 'everything' look fairly low quality.
I've noticed that the VR cams look particularly poor at the moment, so grainy and fuzzy i find them hard to watch.
I'm no tech expert so i'm just guessing at all of these issues - But i'm usually close to the mark.
Whatever the issue is, it seems to be making my eyes hurt.