Er, take the below with a grain of salt. It worked well for a bit, but then I had all kinds of weird troubles. There are warnings re: wireless networks and shared resources when doing this on a Mac, so it may not always be effective.
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Wow!
Any Mac users having issues should also read this link, as following these steps has made the game MUCH better for me. Way smoother.
Is there a Macintosh version?
Leatrix Latency Fix isn't supported on Macs. However, you can achieve
lower latency in OSX by entering the following command in a terminal
window. This will disable delayed acknowledgements until you restart
your computer.
sudo sysctl -w net.inet.tcp.delayed_ack=0
To disable them permanently, create a text file under "/etc/" called
"sysctl.conf" and copy/paste the following line then restart your
computer.
net.inet.tcp.delayed_ack=0