Until now I’ve been using the full resolution of the tif scans Cone Editions does for me - 36000 x 15000 pixels no matter the print size and small prints look incredible. It has always worked great under windows but when I tried printing them on an older iMac running 10.14 (I think Mojave) the whole thing just freezes up with these gigabyte sized files. Is there a file size or resolution limit on the Mac?
And on the same topic - what resolution should I be using ? Should I resample in Photoshop to 720 and set QTR to 2880 dpi ? I assume how this all works is that QTR creates a dither of 4 dots for each image pixel?