FullSpeed PC is a Registry cleaner that promises to "increase your computer's speed and performance", "avoid crashes, freezes and extend the life of your computer".
You might expect the program to come packed with powerful, high-end features, then. But the chances are you'll also be disappointed, as it's much like any other Registry cleaner: allow it to scan your system, it'll detect broken Registry keys and remove them at a click.
There are some thoughtful additions, to be fair. The program saves a backup of whatever keys it deletes, for instance, so you can restore them if that should prove necessary. You can schedule Registry scans to run automatically. And a simple "Startup Programs" section displays the programs that launch when your PC starts, and allows you to disable any you don't need at a click.
None of this seems quite enough to justify the program's price, though - there are better optimisation tools around that cost nothing at all.