After burn - Read Problems..

[doronm]

Hi,
I'm using Pioneer A04 to burn DVD (using DvdIt).
I'm checking the result on a stand alone DVD player (Hyunday 2010).
This DVD player works fine with all my DVD Discs that I buy or rent.
The results for my DVD are fine (video & audio) but I cant read them on a speed higher than X2 or on reverse.
When I change the speed the DVD halt and behave very starnge.

Any Help ?
Doron