Bought new Quad core 17in Battery not charging

I just bought the new 17in MBP and noticed battery not charging only under heavy graphics load.
When i run chrome and netflix together it goes to a not charging state.
When I use Firefox with netflix it would show 4hrs to charge with battery at 50%.
Under basic web surfing or running xcode. I get the normal 1hr to complete charge.
I took it to apple store and they did complete reset and diagnostic run with everything passing.
I have also tried a different power magsafe still having the same issue so I know its not that.
Has anyone been able to find a fix for this or is experiencing the same issue under heavy graphics load.
Thanks

Hi Dan,
I have heard from seemingly knowledgeable people that this is normal. When the MBP needs to use more power (CPU, GPU), it stops charging to divert all the AC current to the MBP and goes back to charging the batt as that demand lessens. I believe this is normal.

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