LINQ ASP.net NTier Application

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C#

Hello,
ive followed the book about writing linq (Essential Linq)
i have a server that holds my APP and another server holding my DB
ive used linq dbml with general stored procedure (Select * from Table) and ive used code to get specific rows:

using (articlesDataContext n = new articlesDataContext())
        {
            n.ObjectTrackingEnabled = false;
            vboxLanguage lang = new vboxLanguage(langs);
            if (lang.active)
            {
                var obj = n.udp_vArticle_lst().Where(p => p.module_id == Moduleid).ToList();
                foreach (udp_vArticle_lstResult thisarticle in obj)
                {
                    if (thisarticle.langid == lang.id)
                    {
                        this.loadContent = thisarticle.articleContent;
                        this.loadName = thisarticle.name;
                        break;
                    }
                    else this.loadContent = "Content Not Available in this Language";
                }
            }
            else this.loadContent = "Content Not Available in this Language";
        }

ive done this for all my methods. However a single request increases the NIC to 100% and stays there for a few seconds, making the page load longer (15 second load time).

if i move the database locally to the application server (both DB and APP in a single server) everything loads fast (2 second load)

an help is appreciated or a reference source you can point me to.

thank you in advance
Aresh