Problem regarding slow bandwidth in netw

I AM USING 100BASET NETWORK WITH SWITH INSTEAD OF HUBS. BUT HERE IS A PROBLEM REGARDING BANDWIDTH ON 300 FEET LONG CONNECTED CLIENT IN MY NEXT OFFICE.HOWEVER WHOLE NETWORK IS SHOWING BANDWIDTH OF 100Mbps. SO WHY LONG DISTANCE CLIENTS GET SLOW RESPONSE(WHEN SUBMIT SQL SERVER QUERIES) IN COMPARISON WITH CLIENTS WHOSE ARE NEAR TO SWITCHING ROOM.ALL CLIENTS ARE USING WINDOWS 2000 NETWORK.