Improve server `var`

Hey @timche

I was trying to use this image to build a CSGO server in a really good server, almost 4X better than the one that you described in your README file, using the command:

docker run -v=csgo:/home/csgo/server --net=host -e CSGO_GSLT='###' -e CSGO_PW='senha' -e CSGO_FORCE_NETSETTINGS='true' timche/csgo:pug-practice

And it worked fine, but when I opened the net_graph I saw that the server var was 0.020 or bigger

Here in Brazil we have the GamersClub, where the server var usually is 0.001

So my question is: do you know how we can improve this server var? Is it a problem with these config files? Or something that we can do in the server?