I have a HTPC and while watching online video that runs flash player I have been having frame rate problems. The set up is an AMD Athlon II X3 @ 3.1GHz (4th core unlocked), HD 5670 512MB, 5GB Ram, 250GB 850EVO, 1TB HD, Blue-Ray player, 30Mbit Internet connection, and the HTPC is hardwired into the router. I have the most current drivers from AMD as well. I did turn off the post processing forced onto internet video and that helped a bit, but stuttering still occurs just for a second or two now. Will a newer graphics card, like a 260x, help or should I turn off enforce smooth playback. Also I have found that this is only a problem when watching over flash, Silverlight doesn't have this problem. Any advice is appreciated, thank you.