bokchoi

Definitely no offense taken NotMyFault, at the time I made my post I was running 1.8.5 and I was concerned over what seemed to be excessive CPU usage compared to Photoshop, especially when doing things like dragging layers around the canvas or zooming. I'm happy to say that since 1.9.x my CPU usage and fan noise has been much better and more comparable to Photoshop, and I didn't fully understand the role of OpenCL rendering at the time of my last post; I personally haven't run into too many stability problems either with 1.9.2.1035 (Radeon RX580 GPU with recent AMD drivers), and overall I'm happy with how the program performs. I hope everyone gets a chance to read through and update to the latest version to see if that resolves their CPU usage problems.

I've also noticed a similar issue with Affinity Photo and when working with raster layers in Designer (1.8.5, but I noticed it on previous versions too). If I select a group of layers and try to move them around, I'll easily exceed 75% CPU usage and even spike to 100%; performing the same task with the same file in Photoshop does not exceed 10%. In terms of actual performance and snappiness I don't notice a huge difference between the two programs, but the burst of fan noise and heat is definitely jarring. I note that this issue is particularly noticeable when manipulating layers (moving them around, setting opacity and visibility, etc.) and zooming; I'm not as concerned with CPU usage relative to Photoshop when doing tasks like running filters, blur, opening files, etc., but the spike that comes with common operations like layers and zoom seems excessive. For tech info, I'm running Windows 10 2004, an AMD Ryzen 2600X on an Asus B450M, default CPU clock and fan settings except the RAM (32GB @ 2933mhz), and a Radeon RX580 (GPU rendering enabled); the file I tested was a 6600x10200px PSD, RGB/8, 5 raster layers. Hoping this is something that can be investigated, thanks!

I'd like to add my voice to request being able to disable auto-selecting layers; it's particularly frustrating with small objects within groups, as mis-clicking causes you to deselect the current layer, and trying to simply re-click to select what you were working on causes you to select the entire group you were working on instead.

Hi, just echoing that I'm having a similar problem here; the problem also exists when trying to export simple line-and-fill graphics in Affinity Photo. White areas seem particularly affected by the Palettized option; I'm also finding that the dithering turns into banding if I use a larger palette. The dithering disappears when exporting without checking the palettized option, but at the cost of a much larger file size.