Hi, have you configured your two E4200 als Client Wireless Bridge or via WDS? I have configured mine E4200 as Client Wireless Brigge. WDS won't work. :-( Don't kniw why. Without Secure Encryption, i have receiced 280-300Mbit over a distance over 12 meters with 1 door. With WPA2-Personal AES, i have a bandwidth over WLAN from 250-265Mbit. I have spend some hours to Test for best Settings, so i have found out, the use of the right Channel is also important as set the right TX-Power. Best Channels on my 5GHz-Enviroment are 112 to 120. You can this set, if you chance your local to Belgium. Also set the TX-Power to 60-65. Over 65mw, the Performance not dramaticaly better. Interesting: If i set loweder Channels 36 to 48, Performance only 160-180Mbit. Same if i set the Channeles in upper Band from 136-161. So the middle Band in 5GHz-Band are. Try it. It can help to boost your Performance.