On this system I have the SMP and GPU clients set to low priority so I stop them whenever I want to recode video or game. Except the SMP, I let it run when I game. I'd rather do it this way, but anything else I do I let them both run. One thing I've noticed, which might only be related to my hardware, when a video starts from any video software, Windows Media Player/capture software/DVR software/DVD playback, it's slow getting started. Once it starts it's not really glitchy at all. So I've just taken to stopping the GPU client when starting any kind of video for this reason.