I got CoD MW3 through AMAZON(JAPAN) .

I am using Steam and this game is very good I think.

But , my PC specification is not good so I want to change texture level setting "Low".

But this is not certificate and that's setting is "Normal" forced.

My setting is not certificate.

Please help me.

My second Question.

Config.cfg file And config_mp.cfg file must not change?

That's change is cheating ?

If I can get more good peformance , I want to change config files.

And where I should change ?

Please help me too.