VOB Files & Hadwaer Acceleration

Folks:

For much of this month I have been using the latest version of RealPlayer to

play VOB files on DVD.

At first the video would be unstable (flickering) but the sound was clear &

sharp. So I played around with the Hardware Acceleration settings until

both video & audio were sharp & clear.

Recently all this high quality has stopped. BOTH video & sound are now SLOW.

Tweaking the Hardware Acceleration no longer makes any difference.

I copied the DVDs to the hard drive but this did NOT improve audio or video

output.

Appreciate any suggestions. Is there any configuration change that I can

make to return to great original quality of audio & video for these VOB

files ?

Thanks,

Jo.