Hi,
the routing performance is great:

[tomek@xenon ~]$ wget -O /dev/null http://192.168.1.5/gpl2.zip
--22:05:03-- http://192.168.1.5/gpl2.zip
=> `/dev/null'
Connecting to 192.168.1.5:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 558,054,874 [application/zip]

100%[================================================== ==============================>] 558,054,874 10.38M/s ETA 00:00

22:06:02 (9.01 MB/s) - `/dev/null' saved [558,054,874/558,054,874]

the test was with enabled firewall and Logged packets set to both
traffic from LAN to WAN

Tomek