Mac Mini using 2 monitors

Hi,

Ive just hooked up 2 monitors to my mac mini. Im using a 40" Smart TV as my main screen and a philips 32" monitor as my 2nd screen. for some reason the smart tvs responce is slugish but the Philips monitor is great.

When I use the smart TV on its own its great. Also the mac dosent remember the 2 screen setup after a restart.

Thanks in advance

Gerry