I bought Affinity Photo yesterday. It's been pretty good so far, but I'm having a lot of problems with cutting objects out of photos. Here is a video displaying the issue. Notice how the refined parts become frayed and messy. (Also notice how slow it is) I have seen both of the in-house tutorials on cutting objects and refining selections. I have also looked at the information in the "Help" menu in Affinity Photo. Here are my machine specs: Macbook Pro Retina - Early 2015 Processor: 2.7 GHz Intel Core i5 RAM: 8 GB 1867 MHz DDR3 Graphics: Intel Iris Graphics 6100 1536 MB Operating System: El Capitan 10.11.2 Am I doing something wrong?