Hi, Did you ever manage to resolve this? I'm having the same problem using a Dell P2715Q - This is been happening for over 6 months to the point where I only use affinity if I really need to. OS version is 10.13.4 - but it has been happening through several versions now. It happens frequently, as soon as I reach for a tool, the screen blacks out for a few seconds and then returns. Any pointers would be fantatic! Many thanks!
I am unable to use both Affinity Designer and Affinity photo. I don't know when this started but it's rather recent. NVRAM and SMC have already been cleared. As I start to work on either of the two applications, as I move the mouse in and out of the canvas, the screen blacks out and takes a few moments to come back. When I move the mouse again it blacks out again. Having suggested Affinity to several friends and wasting my time trying to introduce these tool in my workflow... this is frustrating. Is there a solution for this? If not, will I be entitled to a refund?