YouTube keeps buffering,,,

Hi experts,
​

i have just bought new android tablet (Archos 80 Cobalt), it has android v4.0.4. i have youtube app and try to view any video it keeps on buffering and stopping.

I am using youtube app on Wi-Fi.

The same video streams fine on iPhone and laptop except this new android tablet, so i have good enough internet bandwidth, Its an Adsl connection download 4.5mbps and upload 0.8mbps.

So for further investigation, I installed adobe flash player and firefox browser, and tried to load youtube website using "Request Desktop Site" and watch the video and it worked perfect not a single buffering or stopping. Therefore there is no issues with the tablet or Wi-Fi on it.

The YouTube app version : 4.2.16

Any help will be highly appreciated.