tscrec3.dll is a TSCRec.dll
belonging to TechSmith Screen Recorder SDK
from TechSmith Corporation
Non-system processes like tscrec3.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.