RMBP Not Performing During Battery Charge

Hi...
I have been wondering lately why I am having so extreme RANDOM performance issues with the rMBP.
As indicated above, this is RANDOM.
Today I found out why...
Typically I will have my rMBP plugged in to the power adaptor.
But there are times where I'll bring it home after working in the studio.
Last night my Audio System was flying.
Then I brought it home with me and did some work (on the batt. charge) thus draining it to about 20%.
Then I came back in to the studio and plugged it in to the Power Adapter and booted last night's session.
The rMBP wasn't even capable of playing back the session It had played back the night before. Audio Dropouts all the time...
CPU Freezing etc etc...
That's when it hit me... It is charging...
I continued to try to work on the session the next 30 minutes, which was impossible...
The I kept watching its re-charge.. As it hit 98% (5 minutes left) I tried again... Same impossible result..
Then I waited the 2 minutes and as it was charged... Boom.. The session played back just fine...
I decided to remove the power adapter to trouble shoot... As the battery was being drained I had NO performance issues... What so ever...
As it hit 80% I plugged the Power Adapter back in and again.. Performance dropped to unuseable.
So here on my rMBP I can confirm that while it is being charged it is having immense issues with its performance... Audio Dropouts etc....
I cannot notice this while working in Mail, Safari etc... But as soon as I start using Pro apps like FCPx, Protools, Logic Pro etc..... It becomes VERY clear...
So if any of you are experiencing random performance issues, try waiting until the battery is fully charged and then see if those issues vanish...
I sure would like to know whether you are having those issues as well... If not, I'll take my unit to the repair shop
Thanks

This should not happen. You have some type of hardware problem that needs to be fixed by Apple before the waranty runs out.
The system should run just as fast on battery at 100% to 10-20% and with the charger connected and charging the battery no matter what the remaining charge state is. With the AC adapter connected the system should run at the same speed whether the battery has 100% charge or 10% charge.
About the only time the system should slow down is if you are running it really hard it well draw power from both the battery and the AC charger as Apple does not supply chargers big enough,  enough wattage output, to power the system from just the AC if you are TAXING the system. It will draw power from both the battery and the AC charger. But it should not slow down until the battery becomes complete drianed of charge.

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