[Resizing canvas also increases size of cropped image.]

I want to place 2 images side by side in 1 document.  I have cropped the 2 images to the same pixel dimensions.  With the 1st image, when I try to resize the canvas, width only, the cropped image is also increased in size?  Then when I copy and paste the 2nd image, it also is larger than the cropped version.  How can I keep the 2 cropped images at the same size?

[AP very very slow. Slows down all other activities.]

Open GL seems to have resolved the issue. Speed for opening RAW files and editing is smooth now.  I was on then point of ditching Affinity.

[AP very very slow. Slows down all other activities.]

Hi Chris B, many thanks for the reply.  iMac specs - attached screen shot.  App preferences showed 'Enable Metal Computer acceleration' as ticked and 'Display' not active.  When I unticked 'Enable Metal Computer Acceleration', 'Display' showed active 'Metal'.  App performed much better but slowed down after opening 4 Olympus raw files.  Haven't tried 'OpenGL' yet.  How many Raw files should one open at one time to work on?  Cheers, Jilli.

 

[AP very very slow. Slows down all other activities.]

Has anyone resolved the issue of AP being very very slow?  Up to 5 mins to open a Olympus raw file and further processing requiring minutes for each step.  The spinning coloured ball is mesmerising.  All other software held hostage.  Using iMac High Sierra v10.13.6.