I bought hAP lite RB941-2nD to replace a working TL-WR841N and to keep it simple I'll put it that way: using PPPoE the TL-WR841N is doing 40Mbits/s upload and download while the RB941-2nD is doing 40Mbits download and 20Mbits upload. I've tried 6.38.7 (bugfix only), 6.39.2 (current), 6.40rc38 (RC), ...