Krypton beta 5 deinterlacing with an NVidia 740GT

Just installed Krypton beta 5 on a Win7 PC. As I understand it, Kodi Krypton strictly uses the driver to do deinterlacing. Although in Kodi, I can select DVXA for deinterlacing, the deinterlacing is not very good. I updated to the latest drivers drivers but no changes. IS this a driver issue, a driver issue under Win7 or something to do with Kodi?

At this point just looking for which direcction to go. WIll upload a log file if it would help.
Ian