What's the problem? My video card? If so, is it only due to all background animations going on while using the Theater View UI? If it's only due to that, an option to turn off all background animations would be great...
It's probably not due to the background animations, but you can disable them on either a global or skin-by-skin basis.
To disable it in a particular Theater View skin, simply add the following code to the skin's main.xml (Theater View skins are located at
C:\Program Files\J River\Media Center 12\FullSkins):
<ANIMATION>
<Background Bitmap="Animation\Background.png" Alpha="100" Mode="0" />
</ANIMATION>
To disable it globally, add the same code to this file:
C:\Program Files\J River\Media Center 12\FullSkins\Shared\Base 1.XMLAs I said though... You'll likely find that this is only of limited benefit. On my systems, it does feel a tiny bit more responsive with the animation disabled, but on the order of 2-5 FPS is really the only difference. The animation is fairly simplistic, really....
PS. Thanks to jmone for figuring this out!