I have a macbook pro 7,1 mid 2010, C2D with 4 gb of ram running 10.6.8 (snow leopard). I just did a clean install of snow leopard the other day because mountain lion was giving me problems, updated everything and am using a 24.xxxx beta of google chrome. But within the past few days, I noticed every time I stream an HD video or listen to pandora within chrome, it starts to become laggy and choppy. It makes it so bad that it's unbearable to watch so I now resort to watching youtube videos on my Nexus 7 or on my phone... Any help or suggestions? I've already cleared PRam and have done a clean install as well as update all the drivers/whatnot. Here's a screenie of when I was running Facebook, Paused Pandora, full HD video on Youtube and one google search. The second image is just Chrome playing new girl in HD in full screen with 2 other windows... CPU usage is fully maxed out.