People we've been over this. MW3 is a desktop dedicated game that can use all of your computers CPU power. Because this is a browser game, were only allowed to use 1 of your CPU cores. So if there is lag it is due to the fact that were not allowed to use all of your computers CPU. That is why were about to launch a desktop dedicated version.
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you should try the buy/rent gun system, but have a few free user weapons so people dont get angry at how price the get. base the money on points and dont only give one credit for a kill. that enrages so many people you couldnt belive.