JTB Word's DWG Columns for Explorer has been updated to version 3.2 and got some performance improvements.
We have observed that the performance enhancement is more than 90% for almost all cases. The version 3.1 update could slow down file browsing in Explorer and especially the file selection dialog boxes within Autodesk software.
If you want to see the DWG and DXF properties and metadata in Explorer columns please give the trial a try. No need to have AutoCAD or other CAD programs installed for this to work. After the trial has expired you can still use it to show the DWG version information as long as you like.
DWG Created By (can for example show AutoCAD 2017 or Inventor 2017), DWG id (for example ACAD0001409 making it possible to see difference between a drawing created in AutoCAD or an AutoCAD vertical like AutoCAD Architecture. ODA can show for a DWG created with the Open Design Alliance API), DWG Reg (Version in registry, for example 210 that stands for R21.0) and DWG Build (AutoCAD build number, for example N5200x64).
InfoTip showing when holding the mouse over a file:
If you are also a Revit user our RVT Columns shows the Revit version and Revit build for RTE, RVT, RFA and RFT files.