I have not tested last drivers yet. But since 446.14 was ok for me and after that was not, i came to the conclusion that nvidia changed something in the drivers.
@ThoW1982 Its not Mediaportal related. It is Nvidia related. Same thing happens to me with kodi also. For me last working nvidia driver is 446.14 but i doubt it will suit you, cause the driver is older than your card.
First of all, do you have lav filters installed?
Second you could use madvr as renderer instead of evr [WiP] - madVR support in MP1
i have the same TV and a 1030 card and i must say that i love the picture i am seeing.
Will make new logs later. Htpc is now in use. BTW i didn't recall saying that i am on DXVA native(Although i have trying everything). i will plan to change graphics drivers and finally i will revert to 1703
Its hard to be 100 % sure, cause i updated MP, Mad, Lav at the same time. Previous setup with MP 1.18 Madvr 92 was working ok.
Edit 1
i was able to reproduce it in my other pc. exactly the same thing. Pc is running win10 64 (1709 with the latest update) latest Mp build, latest Madvr, latest...
@Sebastiii
i tested the new bin, but its still the same. When MP is windowed it can upscale image using DXVA, but when MP is fullscreen i get sound but no picture. One thing that i noticed is that if you press stop in fullscreen, then in the top left side of the screen says DXVA processing...