Cavima

Hi, thanks for replying so fast, GhostRaptor!
Unfortunatetly, my problem keeps chasing me. Since turning on the lowest detail level disables those three options, i tried it already. What i did now, is using higher detail options (performance laged me already, i have to add), but disabling those three ones, whith no luck at all.
Seems like if i still want to play, i'll have to do it in 1024x768 with low detail, the best appearence i can play with no problems *sigh*.
I still have the hope someone had the same problem and could solve it... somehow.

I give up. I tired everything and now i ended writing in the official forums, im out of ideas, i hope you can help me ._.
My girlfriend and me have been playing COX for 8 monoths or so, with a good new computer which used vista and a ATI 3400. We never had problems, and we always could play in maximum details. The problem is we hate Vista, so one week ago we went a computer shop and payed a technic to install my original Windows XP in our comps.
When we got home, first of all we installed COX. Surprise? Downtime or lag. I checked everything: internet conection, ATI drivers, a possible virus, DirectX, even uninstalling programs like SRS sandbox, reinstalling COX, testing in all servers... as i said, im out of ideas.
Why we have a graphic lag (i dont know how to call it better) with XP, if we were running properly in Vista? I have the latest driver from ATI website, so...
Ah, one more thing, when i set the 3D resolution scale and graphic quality to the lowest i dont have any problem (obviously i cant play at that way, it's ridiculous). The only way i can play it's in 800x600 resolution and minimum detail, but im not going to keep playing if i cant solve this... and i dont want to leave the game, i have lot of fun, so any information that someone could give to me it will be VERY apreciated.
~~ Sorry my bad english =_= i hope at least someone understands what im trying so say.