@Trevor - you have upgraded to Windows 10 1809. This has been a disaster of a release for Microsoft who stopped its rollout in Oct and have only just started to push it again to "advanced users". Issues around video cards and drivers are pronounced.
We can not replicate this issue yet on our test machines to see if it is a bug that MS will fix or a feature update from that we will need to work around or find some other method of capture, or what drivers/cards/machines are affected. Until it settles down we just dont know and as I said we have multiple VM's here in various configs running DVR captures just fine on 1809.
To the others who haven't provided logs - you can get your windows version by typing winver.exe in the "Type here to search".
Provide debug logs as per https://www.jaksta.com/support/windows/technical/jaksta-media-recorder/how-to-generate-debug-logs-6000009063
From CRS @ 10 Jan 2019 10:01