Never Trust the Fast PC Prof Rogue Optimizer
Fast PC Prof is the name of a rogue optimization program that works on Windows PCs.
Rogue optimization applications are a subcategory of potentially unwanted applications or PUPs. PUPs themselves are a category of software that fills the void between legitimate apps and malware - not as dangerous as malware, but as the name suggests, undesired additions to your system.
Rogue optimization tools usually come up with a large list of "issues" found on your system. There is no guarantee that half those issues are real in the first place, and those that are may not be impacting performance at all.
However, most rogue optimization apps will make a big deal out of their supposed detections and urge you to buy the full version of the app to "fix" the problems.
Usually, rogue optimizers are distributed through bundle installers. If you find one on your system, it is advisable that you uninstall it.