Hi, all this is premiere cc2014 i have no problem with premiere cc!
More often than not when using video effects (particularly film convert, red giant cosmo and the new video effects masks) the playback and rendered flickers slightly, also if i have video footage underneath they show through slightly opaque.
To finish a project i have to work around this by rendering out separate parts uncompressed and bring them back into the project.
This is completely unusable, Ive actually stopped using 2014 and gone back to cc.
windows 7
geforce 285
i7
12 gig ram