As the title says, we finally solved the performance problems we had with the new version, which was using 20-40% of GPU and one whole core of CPU. Now both sit at 0-1% most of the time. The auto-minimize workaround is no longer needed so we removed it.
We're still working in bringing back all features of the legacy version ASAP (SteamVR tools) as well as fixing the disconnected phone issue.