Sorry for any confusion, I’ll answer any specifics I can
No Proxies are being used
All Quality checkboxes are on ‘best’
All Comp > Advanced settings> Preserve resolution when nested is ‘checked’
When I render full res/best quality (1360 x 768) all elements look great.
When I render everything at best possible quality, but with a half res setting (680 x 384) mostly my video elements (which I realize now are nested) and some other nested comps come out pixelated.
I do not expect a 680 x 384 comp to look good blown up to 1360 x 768. I do however expect the comp to look good & sharp at 680 x 384.
I’ve attached images to show what I get, (this is actually 1/4th, but I get the same issue at 1/2 anyway)
Image 1 shows the pixelated video, image 2 shows a photo from the same render that looks great.
And again if I render full res, the video looks just fine.
Hope this helps.