Bret says that watching the TWiT Stream on his tablet buffers while his desktop doesn't. Leo says that the tablet is likely not powerful enough and has to buffer. It fills up the memory with frames so he can stay ahead of the stream, and if he's watching a higher resolution stream, that takes up even more room. His PC has larger memory buffers to handle it with no hesitation, but it can buffer as well, depending on the network traffic. Both will also get dropped packets.