string word = wordBank[wordSelect].Substring(0).ToUpper();

Back to the Hangman application, I figured if I wrote the code one method at a time, then i could figure out I exactly why its not performing up to standards. Nevertheless, I put the hunt for a new project on pause, maybe I won't be so discouraged after the Console Hangman is Complete, and code will be posted. Along with a few other programs I wrote, their not complicated just fun and exercise different styles of writing code; performance, proficiency, less code, compression all depends on how it's wrote.

Hopefully this line should solve the stringbuilder issue:

string word = wordBank[wordSelect].Substring(0).ToUpper();