Wifi connection very slow and interrupted after several minutes

My wifi connection is interrupted after several minutes. I can restart the connection with wifi assisted, diagnose tool. It indicates always ISP failure. When I go through the assistant, it sows that the network connection was changed, and the wifi connection is back. But only for some minutes, then I have to go the the assistant again, and again and again. Also the wifi protocoll tool did not help me.
Meantime I don't have any problems with my IPad or Iphone.
In the web I found plenty of other users with MacBook Pro (Retina) OS X Yosemite, Version 10.10.2 with similar problems. When will apple fix this bug?
Do somebody has in idea how to fix it?
Thanks for your support!
Bird

You posted in the support forum for the Apple routers......AirPort Express, Airport Extreme and Time Capsule.....the products pictured below:
But, your post seems to describe a connection issue that you are experiencing with your MacBook Pro.  We are not sure how an Apple router might be involved here if your other devices are connecting well.
You will likely receive a much faster and more informed response if you post your question in the support area for the MacBook Pro linked just below:
MacBook Pro

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