Here we go V329 : http://tinyurl.com/y95gkae5
So on my side D3D11 Native didn't work good with latest madVR on zapping channel from the same transponder or same source, it gives a video loop.
D3D11 CB works, hope it will be fixed soon
Did you test the very latest version ?
I think before 327 was broken somehow (because MP disconnect output pin from LAV Video and D3D11 really doesn't like it lol)