Getting blank screen when watching channels

[PhantomF]

I just installed NextPVR for the first time tonight and am having an issue with getting a blank screen when trying to watch a channel maybe 80% of the time. When it happens if I hit the back button and click Live TV it will usually load correctly and start playing then but sometimes takes a couple tries doing this. It doesn't matter which options I choose for renderers or decoders it still happens. It works great when I use as a back end server for Kodi but Kodi video quality is crappy and I rather use NextPVR interface directly. Any ideas?

Windows 7 Ultimate 64-bit
AverMedia A188C HD Duet TV Tuner card