I have found that whenever I have anything loaded in PMP (either playing or paused), all web videos (youtube, et al) will not play. When you hit play in the browser, the player just sits in black without progressing.
If I stop the video in Plex, web video playback works again. Does anyone else have this problem? I have tried multiple browsers, but it affects all of them. I have also tried changing around the hardware decoding/direct stream settings without any luck. I do have two video cards feeding two separate monitors, and I am wondering if that is it.
I only experience this issue with PMP. When I have a video loaded in the web player or my fire stick, there are no issues.