Hi, for whatever it’s worth, I’ve used the beta here and there, probably three different versions of the 1.7 beta, and this most recent one feels significantly slower and more of a memory hog than the other versions of the 1.7 beta I’ve used. Previously, while using the 1.7 beta, everything I did felt incredibly fast compared to Affinity Photo 1.6, but after updating to this build a few days ago, it feels like things have slowed down significantly. It’s slightly better than 1.6, but it honestly feels like most of the major gains I noticed are gone. I’ve used it on two occasions to edit a photo and both times I’ve had to restart my computer after editing the photo because it gets the fan going so crazy even after closing other apps. I’m using an old computer (2013 MBP with 8 GB memory), but I was using the same computer for the other betas.
My experience may be unique to me, but just in case you’ve made any changes that would be influencing this I thought I would let you know. I hadn’t updated the beta for a little while, so I can’t pinpoint at which point in the beta process this change might have been. Sorry, I know that isn’t very helpful.