Notes about the NVU file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The NVU file type is primarily associated with 'NVIDIA' by NVIDIA Corporation. This driver usually comes in a file with a name like nvide#.nvu where # is some number.