acatel_prf.dll is a scubeperfdll.dll
belonging to Acapela Telecom HQ//HD TTS
from Acapela Group
Non-system processes like acatel_prf.dll 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.