online flash player doesn't let me fast forward

- I'm using windows 8, 64-bit

- I'm using Google Chrome as a default browser

- Tried all other browsers including IE, Firefox, Opera and safari, and all of them had the same problem

THE PROBLEM IS: The online flash player doesn't let me fast forward %70 of all movies on the same websites that used to be working fine before, beside that, everytime i try to fast forward it keeps rewinding to the beginning of the video, I tried uninstalling flash player from control panel and reinstalling it, restarting my pc and uninstalling chrome and reinstalling it too, but nothing.