I think that this not a problem of GWX,actually,but a feature of SHIII in general.Some ships do produce a really lots of smoke when severly damaged-especially tankers.
To my mind this smoke is not such a big problem,it's often enough to move away for several hundred meters,where you will not experience any lagging.
And the other feature,I like GWX for is that even if it is some lagging there,that lagging does not spoil the gameplay,the game is still playable even if you have the highest graphics settings.
Welcome to Subsim,Kaleun.Have a nice stay,and good hunting
