rtmservice.exe is a process belonging to the Remote Task Manager remote control suite which allows remote users, both on a local network and on the Internet to access your PC and make changes. "This program is a non-essential system process, but should not be terminated unless suspected to be causing problems. "
This software can also be used in a malicious way if installed without your knowledge.
Non-system processes like rtmservice.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