drwtsn32.exe is a process belonging to Microsoft's Dr Watson program error debug utility. This utility can be important for technical support purposes and should be left alone unless suspected to be causing problems.
Non-system processes like drwtsn32.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that over time your registry suffers fragmentation and accumulates invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues