Is it true that the text-to-speech functionality would make my mac run slower? I have been having some issues with my macbook running very slow.  I read an article which stated that disabling the text-to-speech functionality could make the mac faster. Is that true? 

For a year I have been using that functionality to "read" blog posts. Now, on chrome I need to go edit -&gt; speech -&gt; start speaking (there is no shortcut). If I re active the text-to-speech would my mac still run slow
I have never heard of the "text-to-speech" feature causing a slow down. But other things certainly can. Here is a link to what one Apple user has suggested. There are a number of things to try!

https://discussions.apple.com/docs/DOC-6921