i think it turned out to be a setting in the Nvidia control panel on the PC. Although it all still looks a bit burned out on TV and i've played around with the TV settings trying to improve it.
Just confirm that this is a DVD slideshow created in Encore; not a video slideshow you have imported. Does the problem show if you create a 2 to 3 slide project?
What format are the slides? (psd, jpg,tiff; color depth; rgb rather than cmyk, etc)
I don't recall this issue before; it certainly shouldn't happen.
Its created in Encore, imported jpg's (although i have tried with png too) to create a slideshow. It seems to happen no matter what i do, which is why i ended up looking at the Nvidia control panel. There was some sort of brightness correction overriding the media players (although im on a dual screen setup, only one monitor seemed to be affected by this option, weird), turning it off has stopped the issue on my monitor. The TV was never as bad, but it's noticable enough. Im going to have to assume it's just an unfortunate coincedence that my monitor and TV both had/have some sort of option turned on thats causing the issue.
Thanks for the info. Good luck!