I watch a lot of online video mostly on YouTube. In recent months, I have noticed a significant problem with the video stuttering during playback almost like its a series of stills rather than a moving picture. This problem clears up when I clear my cache and then relaunch Safari. It would seem that Safari needs more memory for the cache, but I cannot find anyplace to give it more memory. It is also curious that this has not always been a problem and suddenly becomes one. It may have started when I upgraded to the latest version of Safari, but cant be sure about that. Can anyone help me eliminate this online video issue?