Affinity Photo using 100% of CPU saving a tiff file.

[marciomendonsa]

Dear, I have realized that every time I will save a photo file in tiff with layers, the AP takes a long time to process. When I went to monitor the system to see what was going on, I realized that the AP was using 100% of the processor for this task!

What could it be? Am I doing something wrong?

I leave below data from my Hardware and some screen prints of what happened.

 

CPU AMD Ryzen 5 PRO 4650G with Radeon Graphics.

RAM 32 GB DDR4

SSD 1TB

[NotMyFault]

Lucky man. The files are quite large, and 100% cpu util is the target, not a bug.

An app capable to fully utilize all cores is the best you can get - if it does some useful task.

otherwise you could wait 8x the time with 12.5% utilization.

only if the cpu goes crazy without doing anything useful it is a problem.

the only think to check is edit >preferences >performance. Coul you upload a screenshot?
If possible, activate hardware acceleration there and check again.

[marciomendonsa]

Hello NotMyFault ...

[Dieselelkins]

Hi

 

did you solve this? I’m experiencing similar. Although mostly, photo sits at 95% CPU and does not recover from not responding 

[NotMyFault]

A few things to check as workaround:

• use „merge visible“ before exporting. Note that this uses bilinear resample always, whereas export allows different methods to choose.
• Try different resample methods in export settings. Nearest neighbor should be fastest, and depending on your document content it might create identical results.

I have another question: 

why do you save tiff files with layers?
As far as i know, there is only a very niche use case doing that. Practically it saves an afphoto file in a tiff file used as container, and adding a flattened copy to that tiff. This allows to use DAM systems which use the flattened image for thumbnail or preview purposes. But the layers can only be edited by original Affinity apps, no other apps can import affinity files.

Next, the file size of 400 MByte seems excessive for the given document dimensions of mere 3000x4000, and i see lots of copies of pixel layers, maybe from imported images of far larger size.

Performance depends roughly linearly on document size / pixel dimensions. Affinity allows many non-destructive workflows, meaning it can be avoided to copy pixel layers in many cases.

I don’t say you are doing anything wrong, just explaining some technical constraints why performance is low in the current situation.

[NotMyFault]

12 hours ago, Dieselelkins said:

Hi

 

did you solve this? I’m experiencing similar. Although mostly, photo sits at 95% CPU and does not recover from not responding 

Hi,

i would recommend that you open a dedicated thread for your specific case. If possible upload an example file, and provide information about os, gpu, gpu driver, performance settings. Do you export tiff files with layers ? This post is focused on that special case, and yours might be completely unrelated.