Suggestions are coming in that I have the wrong torch for 1.5mm cuts, it's a 100A torch on a 50A plasma with a 1.1mm tip. It seems the flame is far too hot/wide but the torch does not have a smaller tip.

i need a 50A torch with possibly 0.9 or 1mm tips for this thin steel.

i will get some thick steel to test, this should prove the theory if it cuts well.