The phrase "as to the performance" is correct and usable in written English.
It can be used when discussing or referring to the performance of a person, group, or system in a specific context.
Example: "The committee will evaluate the project as to the performance of the team in meeting the deadlines."
Alternatives: "regarding the performance" or "concerning the performance".
But as to the performance itself, HD is brilliant.
"Any data released before then is therefore unreliable and risks misleading the public as to the performance of the Work Programme".
Figurative language is crucial to the communication of states of mind other than straightforward belief, as well as to the performance of speech acts other than assertion.
The performance of various NN controllers is compared with one another as well as to the performance of other types of controllers.
Simple design calculations are used to illuminate the flow regime presented to the rotor by the guide vanes and conclusions are drawn as to the performance of each grid in predicting performance and providing insight into the fluid flow.
Kerosene-water type emulsions are generally used in these studies, whereas studies with crude oil emulsions are rarely seen so that the results cannot be extrapolated as to the performance of the biodemulsifiers in the demulsification of petroleum emulsions.
Manning has become the rare quarterback who is critiqued nearly as much for how he responds to performances as to the performances themselves.
The drug issue has been contentious in horse racing, and what comes off a veterinarian's truck and goes into a horse is often perceived to be as important to the performance of a horse as its talent.
Her review is intended to encourage more women to report attacks, as well as to improve the performance of public bodies dealing with rape.
Findings and Conclusions: The project is considered as highly relevant, effective and efficient both according to the stakeholders' opinions as well as according to the performance indicators.
As to the financial performance of his casinos, Trump offered every excuse in the book.
