Mike Wuerthele, writing for AppleInsider:

After several back-to-back tests, keeping the processors warm and the fans running, we were able to regularly get impressive scores of up to 916. Using Intel Power Gadget, we clocked the processor speed averaging around 2.3Ghz and 2.6GHz, almost exactly what we were getting with the i9.

Regardless of whether this issue can be resolved via a software update, it is another unforced error by Apple. Assuming Apple was aware of the issue, the could have:

1. Wait until the software was ready to release.
2. Release, but tell press during hands on events that a software update is coming.
3. Don’t release Core i9 models until they meet performance standards, if ever.

Again, assuming Apple was aware of the issue.