Many companies combine many different features into their Investor Presentation. This can make the Investor Presentation too long, jumbled or most likely both.
Rather, use the IR section of your website to post support presentations to complement your main Investor Presentation. This resource document provides a list of potential ideas, such as M & A Summaries, Deep-Dive on Products, History of the Company, etc.
These can help deliver a clear and crisp message at all times on a variety of topics.