I have been using the production version of Affinity Photo 1.7,3,481 & have been Developing, Resizing and exporting JPG from it. I have noticed that my photos don't look sharp.
I then used Nikon Capture NX D to Develop crop and Resize and Export in JPEG and found the results are much sharper. Once the photo is in JPEG and the size I want I can edit in Affinity Photo without loss on fidelity. I then thought I better test the latest Beta version of affinity only to find it has lost support for NRW format,
Please find examples together with the RAW photo at the link below. The filename shows how each example was processed.