Default brand new tf701 screen scrambled when waking from sleep.

i just bought this tablet and was playing around with it and there were no problems.

i downloaded and used the unlock and now my screen looks scrambled after waking from sleep. not all the time though, just occassionally.

i can fix it by sleeping and waking again but was wondering if this is a serious issue and attempt to return it.
CROMi-X TF701T 6.1