Oh shit! SO much better!

Thanks!

I just did, seems like there's no difference. Is there somewhere I need to enable it?

Yes, that's what I'm wondering. I'm seeing reports of people saying it works fine. Perhaps you should give it another go after all these years and report back on performance here so we can try and isolate the issue!

Please let me know if you find it!

I've tested it before the 2.5 SteamVR major update and after, with seemingly no improvements.