stkcwia.dll is a StkWIA.dll
belonging to Syntek USB 2.0 WIA UI Extension Driver
from Syntek America Inc.
Non-system processes like stkcwia.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.