It is common knowledge that initial releases of new operating systems from MS tend to have issues.
I know that they are collecting a pile of data and scrambling behind the scenes to address these issues.
One reason that user adoption is not higher is that a GREAT many organizations are taking a wait and see approach which has worked well in the past.
They will likely triage this in some kind of order like below.
1. Critical bugs
2. Usability issues
3. Key complaints
4. Performance
5. Feature Requests
They may work on some of this in parallel, but they will eventually get to performance enhancements, fixing issues and hopefully providing better support than Windows 10 for things like the 12th gen Intel processors.