I'm running the latest Progdvd PRO (trial).

I have a gfx card with 2xDVI outputs, and running main screen with a resolution of 1680x1050. The other output is a Projector, running at 1920x1080p and when i move progdvd over to that screen, first audio might stop and i have to re-select the channel, but if i try to use fullscreen the picture freeze. I have to window it again, and re-select channel to get image again.

Is the resolution too high for ProgDVB?

I tested fullscreen with FireDTV viewer siftware i got with my Floppy DTV dvb-s2 card and fullscreen then works perfectly.

seems dual display issue, can you just connect to the projector, set the resoluation to 1920x1080p to see if the problem still there?

If the projector displays okay for your operations, then

1. gfx driver issue. Update to the latest driver from nvidia.
2. ProgDVB dual display issue. Need Prog to fix.

You can try change video render.

I've been away the last few days and unable to test your suggestions, but when i came back i noticed there was an update of ProgDVB, and i've installed this and when i was about to do some testing this problem seems to be fixed, some way or another. But problem seems to be solved

problem not solved after all... when directshow -> videorender is set to "Video renderer (OSD not supported)" it work fine, but if i use any other render, like "enhanced video renderer" it doesnt work. Only enhanced video gives me a good image quality, the rest get kind of pixelerated.... any idea? i'm using Cyberlink (PDVD8) codecs for audio/video.