Notes about the X3DV 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 X3DV file type is primarily associated with 'X3D' by Web3D Consortium. X3D is a royalty-free open standards file format and run-time architecture to represent and communicate 3D scenes and objects using XML.