windvd pro 11 auto screen resize

[datus]

I have tried the demo of this software and have been very impressed with it.
I have been using powerdvd ultra since V7 and thought it was time to go looking else where.

I would really like to buy windvd but the seems to be one thing i can't stop it doing and that setting screen size.

Eg. if my display is set to 1080 and I load a 720 it resizes my video card to 720, this makes my screen go black for 10 seconds or more as my projector re-syncs.

does anyone know how to stop it doing this?