Affinity 1.9 crashed on me too. My laptop has Intel HD Graphic 630, and NIVADA GTX 1050, I tried selecting both, and checked to make sure drivers were up to date, they were.. Was developing 24 MB Nikon D610 RAW image, never made it out of develop. Crash usually happened when cropping or zooming. I disabled the Open CL and tried it again, it worked. Based on all the other posts I will use Affiniity sparingly and look forward to an update. I have to say, though, that I was comparing Affinity to Topaz for sharpening. I found Topaz to be quite slow, and the Affinity sharpening in raw development looked as good if not better.