bagent.exe belongs to the Quicken software from Intuit Inc. It manages the scheduled update feature informing you when new updates are released.
Non-system processes like bagent.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues.