acombo3d.exe is a component of your Mouse drivers. It is not the Windows standard driver but might be required to ensure that all featured on your mouse is working properly.
Non-system processes like acombo3d.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