Hi,
I found a (probable) bug where clicking on a large image (30 MB in size) in the browser results in cpu spike. This causes selecting a large image to take a long time. This also causes double click to open the image to sometimes fail. 
I have tested several old versions and also observed this problem since version 0.89.
How to reproduce:
1. create a folder containing 2 large images (I use two 30 MB JPG images, 14000 x 9000 px).
2. run a fresh xnview mp, close any info and preview panel, browse to the folder, wait until the thumbnails are generated, try selecting the first image and the second image multiple times. The CPU usage will spike and it will take a long time until the image is selected.
Environment:
Windows 10
XnView MP 1.9.5 x64
I also tested xnview and this problem does not exist in it.
Disabling embedded thumbnail in the settings results in a different lag, fast at first selection but slow again on the second selection. I assume xnviewmp is regenerating the thumbnail when clicking the image in the browser.
			
			
									
						
										
						0.89 - 1.9.5 Selecting a large image in the browser is very slow
Moderators: helmut, xnview, Dreamer
Re: 0.89 - 1.9.5 Selecting a large image in the browser is very slow
When you select an image file, image is loaded in preview
			
			
									
						
							Pierre.
			
						Re: 0.89 - 1.9.5 Selecting a large image in the browser is very slow
Why should the image be loaded in preview if the preview is hidden?