G.TI can honestly say Wi-Fi isn't the problem here. For my online gaming and my PC I have never used ethernet and have never had any latency or data transfer speed issues. Only the occassional disconnect from my router because there is several devices which connect to it sometimes.
G.TYep, mine has always about that strength also. Router is at the opposite end of the house so it's never been practical for me to use a cable either.