Fancy being a bit cheeky? Please ask him the following:
Given that he's converted Sargon to C#, how about... transpiling the code into JavaScript so that it can run directly from a web page?
Modern browsers can run JavaScript really quickly these days - the program might well be as strong, or even stronger, than the original!
One possible issue: running a heavy JavaScript program might cause the web page to lock up in the browser. Maybe ask somebody who has already written a JavaScript chess program how they handled this (I could offer suggestions, but I'm not an expert). Alternatively, if the site is hosted on a Google server, the JavaScript can run asynchronously on the Google host without locking up the browser at all!
Some C# to JavaScript transpilers -
link.