Whenever I have more than 3 group layers Affinity runs out of memory and crashes out. It's as if Affinity is not releasing memory after a process? I only seem to have problems in the layers module. Other than that Affinity Photo is a brilliant product.
While I'm at it, may I also suggest that the Blend It attached to each adjustment layer with the gear wheel be given a thumbnail b/w display to show which areas of the image is being affected when moving the graph. See Topaz. The Blend It tool is very good. I use it all the time. This small change would mean that I would be able to see what is affected and not have to resort to the Brightness slider.
Please give the memory problem urgent attention. Driving me nuts!
I use a brand new Surface Pro with 16Gb ram and 1Tb ssd.