I had some terrible streaming problems for quite a while. I bought a new computer and everything is fine now. I think something was failing in the old computer. My printer quit getting the proper commands from the computer too and I also had problems connecting my recording interface. You might have a component going out in the computer.
I still have a slight stuttering issue with streaming or listening back to music on my hard drive. That is a conflict issue with a couple of processes happening at the same time on the same IRQ in the computer, I think. Otherwise, I didn't notice any problems with YouTube. Do a speed test and make sure your ISP is giving you the bandwidth you are paying for.
"No Tele For you." - The Tele Nazi
Ha! Tele-ish now inbound.