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hi guys. im suppose to make a poster for a college project on photoshop and i dont know how the resolutions work... the poster will be printed on a vertical A1 paper, however wen i put in the dimensions for A1 (594x841mm) it is just too large to work with and the whole system slows down because of it.. i was hoping someone could tell me a way around it. would i be able to work with smaller dimensions and still get the same quality on the final print? or would it start to pixelate?.. your urgent help will be much appreciated. thanks